Tweak non-pure-black dark mode colors

Packages/Pachyderm/Sources/Pachyderm/Model/Account.swift

@@ -171,7 +171,7 @@ extension Account: CustomDebugStringConvertible {
 }
 
 extension Account {
-    public struct Field: Codable {
+    public struct Field: Codable, Equatable {
         public let name: String
         public let value: String
         public let verifiedAt: Date?

Tusker.xcodeproj/project.pbxproj

@@ -299,6 +299,7 @@
 		D6C3F4F7298ED7F70009FCFF /* FavoritesViewController.swift in Sources */ = {isa = PBXBuildFile; fileRef = D6C3F4F6298ED7F70009FCFF /* FavoritesViewController.swift */; };
 		D6C3F4F9298EDBF20009FCFF /* ConversationTree.swift in Sources */ = {isa = PBXBuildFile; fileRef = D6C3F4F8298EDBF20009FCFF /* ConversationTree.swift */; };
 		D6C3F4FB299035650009FCFF /* TrendsViewController.swift in Sources */ = {isa = PBXBuildFile; fileRef = D6C3F4FA299035650009FCFF /* TrendsViewController.swift */; };
+		D6C3F5172991C1A00009FCFF /* View+AppListStyle.swift in Sources */ = {isa = PBXBuildFile; fileRef = D6C3F5162991C1A00009FCFF /* View+AppListStyle.swift */; };
 		D6C693EF216192C2007D6A6D /* TuskerNavigationDelegate.swift in Sources */ = {isa = PBXBuildFile; fileRef = D6C693EE216192C2007D6A6D /* TuskerNavigationDelegate.swift */; };
 		D6C693FC2162FE6F007D6A6D /* LoadingViewController.swift in Sources */ = {isa = PBXBuildFile; fileRef = D6C693FB2162FE6F007D6A6D /* LoadingViewController.swift */; };
 		D6C693FE2162FEEA007D6A6D /* UIViewController+Children.swift in Sources */ = {isa = PBXBuildFile; fileRef = D6C693FD2162FEEA007D6A6D /* UIViewController+Children.swift */; };
@@ -325,6 +326,8 @@
 		D6D4DDF0212518A200E1C4BB /* TuskerUITests.swift in Sources */ = {isa = PBXBuildFile; fileRef = D6D4DDEF212518A200E1C4BB /* TuskerUITests.swift */; };
 		D6D706A029466649000827ED /* ScrollingSegmentedControl.swift in Sources */ = {isa = PBXBuildFile; fileRef = D6D7069F29466649000827ED /* ScrollingSegmentedControl.swift */; };
 		D6D706A72948D4D0000827ED /* TimlineState.swift in Sources */ = {isa = PBXBuildFile; fileRef = D6D706A62948D4D0000827ED /* TimlineState.swift */; };
+		D6D94955298963A900C59229 /* Colors.swift in Sources */ = {isa = PBXBuildFile; fileRef = D6D94954298963A900C59229 /* Colors.swift */; };
+		D6D9498D298CBB4000C59229 /* TrendingStatusCollectionViewCell.swift in Sources */ = {isa = PBXBuildFile; fileRef = D6D9498C298CBB4000C59229 /* TrendingStatusCollectionViewCell.swift */; };
 		D6D9498F298EB79400C59229 /* CopyableLable.swift in Sources */ = {isa = PBXBuildFile; fileRef = D6D9498E298EB79400C59229 /* CopyableLable.swift */; };
 		D6DD2A3F273C1F4900386A6C /* ComposeAttachmentImage.swift in Sources */ = {isa = PBXBuildFile; fileRef = D6DD2A3E273C1F4900386A6C /* ComposeAttachmentImage.swift */; };
 		D6DD2A45273D6C5700386A6C /* GIFImageView.swift in Sources */ = {isa = PBXBuildFile; fileRef = D6DD2A44273D6C5700386A6C /* GIFImageView.swift */; };
@@ -710,6 +713,7 @@
 		D6C3F4F6298ED7F70009FCFF /* FavoritesViewController.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = FavoritesViewController.swift; sourceTree = "<group>"; };
 		D6C3F4F8298EDBF20009FCFF /* ConversationTree.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = ConversationTree.swift; sourceTree = "<group>"; };
 		D6C3F4FA299035650009FCFF /* TrendsViewController.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = TrendsViewController.swift; sourceTree = "<group>"; };
+		D6C3F5162991C1A00009FCFF /* View+AppListStyle.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = "View+AppListStyle.swift"; sourceTree = "<group>"; };
 		D6C693EE216192C2007D6A6D /* TuskerNavigationDelegate.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = TuskerNavigationDelegate.swift; sourceTree = "<group>"; };
 		D6C693FB2162FE6F007D6A6D /* LoadingViewController.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = LoadingViewController.swift; sourceTree = "<group>"; };
 		D6C693FD2162FEEA007D6A6D /* UIViewController+Children.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = "UIViewController+Children.swift"; sourceTree = "<group>"; };
@@ -743,6 +747,8 @@
 		D6D7069F29466649000827ED /* ScrollingSegmentedControl.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = ScrollingSegmentedControl.swift; sourceTree = "<group>"; };
 		D6D706A62948D4D0000827ED /* TimlineState.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = TimlineState.swift; sourceTree = "<group>"; };
 		D6D706A829498C82000827ED /* Tusker.xcconfig */ = {isa = PBXFileReference; lastKnownFileType = text.xcconfig; path = Tusker.xcconfig; sourceTree = "<group>"; };
+		D6D94954298963A900C59229 /* Colors.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = Colors.swift; sourceTree = "<group>"; };
+		D6D9498C298CBB4000C59229 /* TrendingStatusCollectionViewCell.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = TrendingStatusCollectionViewCell.swift; sourceTree = "<group>"; };
 		D6D9498E298EB79400C59229 /* CopyableLable.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = CopyableLable.swift; sourceTree = "<group>"; };
 		D6DD2A3E273C1F4900386A6C /* ComposeAttachmentImage.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = ComposeAttachmentImage.swift; sourceTree = "<group>"; };
 		D6DD2A44273D6C5700386A6C /* GIFImageView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = GIFImageView.swift; sourceTree = "<group>"; };
@@ -1181,6 +1187,7 @@
 				D6ADB6E928E91C30009924AB /* TimelineStatusCollectionViewCell.swift */,
 				D601FA60297B539E00A8E8B5 /* ConversationMainStatusCollectionViewCell.swift */,
 				D6ADB6EB28EA73CB009924AB /* StatusContentContainer.swift */,
+				D6D9498C298CBB4000C59229 /* TrendingStatusCollectionViewCell.swift */,
 			);
 			path = Status;
 			sourceTree = "<group>";
@@ -1274,6 +1281,7 @@
 				D6DD353E22F502EC00A9563A /* Preferences+Notification.swift */,
 				D6BC9DB4232D4CE3002CA326 /* NotificationsMode.swift */,
 				D61F75872932DB6000C0B37F /* StatusSwipeAction.swift */,
+				D6D94954298963A900C59229 /* Colors.swift */,
 			);
 			path = Preferences;
 			sourceTree = "<group>";
@@ -1303,6 +1311,7 @@
 				D63CC70F2911F1E4000E19DE /* UIScrollView+Top.swift */,
 				D61F758F29353B4300C0B37F /* FileManager+Size.swift */,
 				D61F75AC293AF39000C0B37F /* Filter+Helpers.swift */,
+				D6C3F5162991C1A00009FCFF /* View+AppListStyle.swift */,
 			);
 			path = Extensions;
 			sourceTree = "<group>";
@@ -2002,6 +2011,7 @@
 				D6AC956723C4347E008C9946 /* MainSceneDelegate.swift in Sources */,
 				D6311C5025B3765B00B27539 /* ImageDataCache.swift in Sources */,
 				D6BC9DD7232D7811002CA326 /* TimelinesPageViewController.swift in Sources */,
+				D6D9498D298CBB4000C59229 /* TrendingStatusCollectionViewCell.swift in Sources */,
 				D60E2F2E244248BF005F8713 /* MastodonCachePersistentStore.swift in Sources */,
 				D620483623D38075008A63EF /* ContentTextView.swift in Sources */,
 				D651C5B42915B00400236EF6 /* ProfileFieldsView.swift in Sources */,
@@ -2011,6 +2021,7 @@
 				D6A3BC802321B7E600FD64D5 /* FollowNotificationGroupTableViewCell.swift in Sources */,
 				D627944D23A9A03D00D38C68 /* ListTimelineViewController.swift in Sources */,
 				D6D12B2F2925D66500D528E1 /* TimelineGapCollectionViewCell.swift in Sources */,
+				D6D94955298963A900C59229 /* Colors.swift in Sources */,
 				D6945C3823AC739F005C403C /* InstanceTimelineViewController.swift in Sources */,
 				D625E4822588262A0074BB2B /* DraggableTableViewCell.swift in Sources */,
 				D68E525B24A3D77E0054355A /* TuskerRootViewController.swift in Sources */,
@@ -2238,6 +2249,7 @@
 				D6E426B325337C7000C02E1C /* CustomEmojiImageView.swift in Sources */,
 				D6D4DDD0212518A000E1C4BB /* AppDelegate.swift in Sources */,
 				D61F75B3293BD89C00C0B37F /* UpdateFilterService.swift in Sources */,
+				D6C3F5172991C1A00009FCFF /* View+AppListStyle.swift in Sources */,
 				D65B4B6A297777D900DABDFB /* StatusNotFoundView.swift in Sources */,
 				D6412B0924B0291E00F5412E /* MyProfileViewController.swift in Sources */,
 				D601FA5D297B2E6F00A8E8B5 /* ConversationCollectionViewController.swift in Sources */,

Tusker/AppDelegate.swift

@@ -20,6 +20,7 @@ class AppDelegate: UIResponder, UIApplicationDelegate {
     func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
         configureSentry()
         swizzleStatusBar()
+        swizzlePresentationController()
         
         AppShortcutItem.createItems(for: application)
         
@@ -154,4 +155,24 @@ class AppDelegate: UIResponder, UIApplicationDelegate {
             Logging.general.error("Unable to swizzle status bar manager")
         }
     }
+    
+    private func swizzlePresentationController() {
+        var originalIMP: IMP?
+        let imp = imp_implementationWithBlock({ (self: UIPresentationController) in
+            let new = UITraitCollection(pureBlackDarkMode: self.presentingViewController.traitCollection.pureBlackDarkMode)
+            if let existing = self.overrideTraitCollection {
+                self.overrideTraitCollection = UITraitCollection(traitsFrom: [existing, new])
+            } else {
+                self.overrideTraitCollection = new
+            }
+            let original = unsafeBitCast(originalIMP!, to: (@convention(c) (UIPresentationController) -> Void).self)
+            original(self)
+        } as (@convention(block) (UIPresentationController) -> Void))
+        let sel = Selector(["Necessary", "If", "Traits", "update", "_"].reversed().joined())
+        originalIMP = class_replaceMethod(UIPresentationController.self, sel, imp, "v@:")
+        if originalIMP == nil {
+            Logging.general.error("Unable to swizzle presentation controller")
+        }
+    }
+
 }

Tusker/Extensions/View+AppListStyle.swift

@@ -0,0 +1,48 @@
+//
+//  View+AppListStyle.swift
+//  Tusker
+//
+//  Created by Shadowfacts on 2/6/23.
+//  Copyright © 2023 Shadowfacts. All rights reserved.
+//
+
+import SwiftUI
+import Combine
+
+extension View {
+    @ViewBuilder
+    func appGroupedListBackground(container: UIAppearanceContainer.Type, applyBackground: Bool = true) -> some View {
+        if #available(iOS 16.0, *) {
+            if applyBackground {
+                self
+                    .scrollContentBackground(.hidden)
+                    .background(Color.appGroupedBackground.edgesIgnoringSafeArea(.all))
+            } else {
+                self
+                    .scrollContentBackground(.hidden)
+            }
+        } else {
+            self
+                .onAppear {
+                    UITableView.appearance(whenContainedInInstancesOf: [container]).backgroundColor = .appGroupedBackground
+                }
+        }
+    }
+    
+    func appGroupedListRowBackground() -> some View {
+        self.modifier(AppGroupedListRowBackground())
+    }
+}
+
+private struct AppGroupedListRowBackground: ViewModifier {
+    @Environment(\.colorScheme) private var colorScheme
+    
+    func body(content: Content) -> some View {
+        if colorScheme == .dark, !Preferences.shared.pureBlackDarkMode {
+            content
+                .listRowBackground(Color.appGroupedCellBackground)
+        } else {
+            content
+        }
+    }
+}

Tusker/Preferences/Colors.swift

@@ -0,0 +1,104 @@
+//
+//  Colors.swift
+//  Tusker
+//
+//  Created by Shadowfacts on 1/31/23.
+//  Copyright © 2023 Shadowfacts. All rights reserved.
+//
+
+import UIKit
+import SwiftUI
+
+extension UIColor {
+    static let appBackground = UIColor { traitCollection in
+        if case .dark = traitCollection.userInterfaceStyle,
+           !traitCollection.pureBlackDarkMode {
+            return UIColor(hue: 230/360, saturation: 23/100, brightness: 10/100, alpha: 1)
+        } else {
+            return .systemBackground
+        }
+    }
+    
+    static let appSecondaryBackground = UIColor { traitCollection in
+        if case .dark = traitCollection.userInterfaceStyle,
+           !traitCollection.pureBlackDarkMode {
+            if traitCollection.userInterfaceLevel == .elevated {
+                return UIColor(hue: 230/360, saturation: 23/100, brightness: 10/100, alpha: 1)
+            } else {
+                return UIColor(hue: 230/360, saturation: 23/100, brightness: 5/100, alpha: 1)
+            }
+        } else {
+            return .secondarySystemBackground
+        }
+    }
+    
+    static let appGroupedBackground = UIColor { traitCollection in
+        if case .dark = traitCollection.userInterfaceStyle,
+           !traitCollection.pureBlackDarkMode {
+            return .appSecondaryBackground
+        } else {
+            return .systemGroupedBackground
+        }
+    }
+    
+    static let appSelectedCellBackground = UIColor { traitCollection in
+        if case .dark = traitCollection.userInterfaceStyle,
+           !traitCollection.pureBlackDarkMode {
+            return UIColor(hue: 230/360, saturation: 20/100, brightness: 27/100, alpha: 1)
+        } else {
+            return .systemFill
+        }
+    }
+    
+    static let appGroupedCellBackground = UIColor { traitCollection in
+        if case .dark = traitCollection.userInterfaceStyle {
+            if traitCollection.pureBlackDarkMode {
+                return .secondarySystemBackground
+            } else {
+                return .appFill
+            }
+        } else {
+            return .systemBackground
+        }
+    }
+    
+    static let appFill = UIColor { traitCollection in
+        if case .dark = traitCollection.userInterfaceStyle,
+           !traitCollection.pureBlackDarkMode {
+            return UIColor(hue: 230/360, saturation: 20/100, brightness: 17/100, alpha: 1)
+        } else {
+            return .systemFill
+        }
+    }
+}
+
+extension Color {
+    static let appBackground = Color(uiColor: .appBackground)
+    static let appGroupedBackground = Color(uiColor: .appGroupedBackground)
+    static let appSecondaryBackground = Color(uiColor: .appSecondaryBackground)
+    static let appSelectedCellBackground = Color(uiColor: .appGroupedCellBackground)
+    static let appGroupedCellBackground = Color(uiColor: .appGroupedCellBackground)
+    static let appFill = Color(uiColor: .appFill)
+}
+
+private let traitsKey: String = ["Traits", "Defined", "client", "_"].reversed().joined()
+private let key = "tusker_usePureBlackDarkMode"
+
+extension UITraitCollection {
+    var pureBlackDarkMode: Bool {
+        get {
+            // default to true to mach OS behavior
+            (value(forKey: traitsKey) as? [String: Any])?[key] as? Bool ?? true
+        }
+        set {
+            var dict = value(forKey: traitsKey) as? [String: Any] ?? [:]
+            dict[key] = newValue
+            setValue(dict, forKey: traitsKey)
+        }
+    }
+    
+    convenience init(pureBlackDarkMode: Bool) {
+        self.init()
+        self.pureBlackDarkMode = pureBlackDarkMode
+    }
+}

Tusker/Preferences/Preferences.swift

@@ -38,6 +38,7 @@ class Preferences: Codable, ObservableObject {
         let container = try decoder.container(keyedBy: CodingKeys.self)
         
         self.theme = try container.decode(UIUserInterfaceStyle.self, forKey: .theme)
+        self.pureBlackDarkMode = try container.decodeIfPresent(Bool.self, forKey: .pureBlackDarkMode) ?? true
         self.accentColor = try container.decodeIfPresent(AccentColor.self, forKey: .accentColor) ?? .default
         self.avatarStyle = try container.decode(AvatarStyle.self, forKey: .avatarStyle)
         self.hideCustomEmojiInUsernames = try container.decode(Bool.self, forKey: .hideCustomEmojiInUsernames)
@@ -92,6 +93,7 @@ class Preferences: Codable, ObservableObject {
         var container = encoder.container(keyedBy: CodingKeys.self)
         
         try container.encode(theme, forKey: .theme)
+        try container.encode(pureBlackDarkMode, forKey: .pureBlackDarkMode)
         try container.encode(accentColor, forKey: .accentColor)
         try container.encode(avatarStyle, forKey: .avatarStyle)
         try container.encode(hideCustomEmojiInUsernames, forKey: .hideCustomEmojiInUsernames)
@@ -140,6 +142,7 @@ class Preferences: Codable, ObservableObject {
     
     // MARK: Appearance
     @Published var theme = UIUserInterfaceStyle.unspecified
+    @Published var pureBlackDarkMode = true
     @Published var accentColor = AccentColor.default
     @Published var avatarStyle = AvatarStyle.roundRect
     @Published var hideCustomEmojiInUsernames = false
@@ -202,6 +205,7 @@ class Preferences: Codable, ObservableObject {
     
     private enum CodingKeys: String, CodingKey {
         case theme
+        case pureBlackDarkMode
         case accentColor
         case avatarStyle
         case hideCustomEmojiInUsernames

Tusker/Scenes/MainSceneDelegate.swift

@@ -243,8 +243,13 @@ class MainSceneDelegate: UIResponder, UIWindowSceneDelegate, TuskerSceneDelegate
     }
     
     @objc func themePrefChanged() {
-        window?.overrideUserInterfaceStyle = Preferences.shared.theme
+        guard let window else { return }
-        window?.tintColor = Preferences.shared.accentColor.color
+        window.overrideUserInterfaceStyle = Preferences.shared.theme
+        window.tintColor = Preferences.shared.accentColor.color
+        let key = ["Controller", "Presentation", "root", "_"].reversed().joined()
+        if let rootPresentationController = window.value(forKey: key) as? UIPresentationController {
+            rootPresentationController.overrideTraitCollection = UITraitCollection(pureBlackDarkMode: Preferences.shared.pureBlackDarkMode)
+        }
     }
     
     func showAddAccount() {

Tusker/Screens/Account Follows/AccountFollowsListViewController.swift

@@ -41,7 +41,8 @@ class AccountFollowsListViewController: UIViewController, CollectionViewControll
     }
     
     override func loadView() {
-        var config = UICollectionLayoutListConfiguration(appearance: .grouped)
+        var config = UICollectionLayoutListConfiguration(appearance: .plain)
+        config.backgroundColor = .appBackground
         config.itemSeparatorHandler = { [unowned self] indexPath, sectionConfig in
             guard let item = self.dataSource.itemIdentifier(for: indexPath) else {
                 return sectionConfig
@@ -65,6 +66,16 @@ class AccountFollowsListViewController: UIViewController, CollectionViewControll
         let accountCell = UICollectionView.CellRegistration<AccountCollectionViewCell, String> { [unowned self] cell, indexPath, item in
             cell.delegate = self
             cell.updateUI(accountID: item)
+            
+            cell.configurationUpdateHandler = { cell, state in
+                var config = UIBackgroundConfiguration.listPlainCell().updated(for: state)
+                if state.isHighlighted || state.isSelected {
+                    config.backgroundColor = .appSelectedCellBackground
+                } else {
+                    config.backgroundColor = .appBackground
+                }
+                cell.backgroundConfiguration = config
+            }
         }
         let loadingCell = UICollectionView.CellRegistration<LoadingCollectionViewCell, Void> { cell, indexPath, item in
             cell.indicator.startAnimating()

Tusker/Screens/Account List/AccountListViewController.swift

@@ -31,7 +31,8 @@ class AccountListViewController: UIViewController, CollectionViewController {
     }
     
     override func loadView() {
-        let config = UICollectionLayoutListConfiguration(appearance: .grouped)
+        var config = UICollectionLayoutListConfiguration(appearance: .grouped)
+        config.backgroundColor = .appGroupedBackground
         let layout = UICollectionViewCompositionalLayout.list(using: config)
         view = UICollectionView(frame: .zero, collectionViewLayout: layout)
         collectionView.delegate = self

Tusker/Screens/Asset Picker/AssetCollectionViewController.swift

@@ -72,7 +72,8 @@ class AssetCollectionViewController: UIViewController, UICollectionViewDelegate
             // bottom ignores safe area because we want cells to underflow bottom of the screen on notched iPhones
             view.bottomAnchor.constraint(equalTo: collectionView.bottomAnchor),
         ])
-        view.backgroundColor = .systemBackground
+        view.backgroundColor = .appBackground
+        collectionView.backgroundColor = .appBackground
         
         navigationItem.rightBarButtonItem = UIBarButtonItem(barButtonSystemItem: .done, target: self, action: #selector(donePressed))
 

Tusker/Screens/Asset Picker/AssetCollectionsListViewController.swift

@@ -34,6 +34,7 @@ class AssetCollectionsListViewController: UITableViewController {
         tableView.register(UINib(nibName: "AlbumTableViewCell", bundle: .main), forCellReuseIdentifier: "albumCell")
         
         tableView.allowsFocus = true
+        tableView.backgroundColor = .appGroupedBackground
         
         dataSource = DataSource(tableView: tableView, cellProvider: { (tableView, indexPath, item) -> UITableViewCell? in
             switch item {

Tusker/Screens/Compose/ComposeAttachmentsList.swift

@@ -112,7 +112,7 @@ struct ComposeAttachmentsList: View {
                 self.isShowingAssetPickerPopover = false
             }
             // on iPadOS 16, this is necessary to show the dark color in the popover arrow
-            .background(Color(.systemBackground))
+            .background(Color(.appBackground))
             .environment(\.colorScheme, .dark)
             .edgesIgnoringSafeArea(.bottom)
             .withSheetDetentsIfAvailable()

Tusker/Screens/Compose/ComposePollView.swift

@@ -111,7 +111,7 @@ struct ComposePollView: View {
     
     private var backgroundColor: Color {
         // in light mode, .secondarySystemBackground has a blue-ish hue, which we don't want
-        colorScheme == .dark ? Color(UIColor.secondarySystemBackground) : Color(white: 0.95)
+        colorScheme == .dark ? Color.appFill : Color(white: 0.95)
     }
     
     private var buttonBackgroundColor: Color {
@@ -191,7 +191,7 @@ struct ComposePollOption: View {
     
     private var textField: some View {
         var field = ComposeEmojiTextField(text: $option.text, placeholder: "Option \(optionIndex + 1)", maxLength: mastodonController.instance?.pollsConfiguration?.maxCharactersPerOption)
-        return field.backgroundColor(.systemBackground)
+        return field.backgroundColor(.appBackground)
     }
     
     private func removeOption() {
@@ -216,7 +216,7 @@ struct ComposePollOption: View {
                     .cornerRadius(radiusFraction * size)
                 
                 Rectangle()
-                    .foregroundColor(Color(UIColor.systemBackground))
+                    .foregroundColor(Color(UIColor.appBackground))
                     .frame(width: innerSize, height: innerSize)
                     .cornerRadius(radiusFraction * innerSize)
             }

Tusker/Screens/Compose/ComposeView.swift

@@ -94,6 +94,9 @@ struct ComposeView: View {
     
     var body: some View {
         ZStack(alignment: .top) {
+            // just using .background doesn't work; for some reason it gets inset immediately after the software keyboard is dismissed
+            Color.appBackground
+            
             mainList
                 .scrollDismissesKeyboardInteractivelyIfAvailable()
             
@@ -169,11 +172,13 @@ struct ComposeView: View {
                 )
                 .listRowInsets(EdgeInsets(top: 8, leading: 8, bottom: 4, trailing: 8))
                 .listRowSeparator(.hidden)
+                .listRowBackground(Color.appBackground)
             }
             
             header
                 .listRowInsets(EdgeInsets(top: draft.inReplyToID == nil ? 8 : 4, leading: 8, bottom: 4, trailing: 8))
                 .listRowSeparator(.hidden)
+                .listRowBackground(Color.appBackground)
             
             if uiState.draft.contentWarningEnabled {
                 ComposeEmojiTextField(
@@ -184,6 +189,7 @@ struct ComposeView: View {
                 )
                     .listRowInsets(EdgeInsets(top: 4, leading: 8, bottom: 4, trailing: 8))
                     .listRowSeparator(.hidden)
+                    .listRowBackground(Color.appBackground)
             }
             
             MainComposeTextView(
@@ -192,17 +198,20 @@ struct ComposeView: View {
             )
                 .listRowInsets(EdgeInsets(top: 4, leading: 8, bottom: 4, trailing: 8))
                 .listRowSeparator(.hidden)
+                .listRowBackground(Color.appBackground)
             
             if let poll = draft.poll {
                 ComposePollView(draft: draft, poll: poll)
                     .listRowInsets(EdgeInsets(top: 4, leading: 8, bottom: 4, trailing: 8))
                     .listRowSeparator(.hidden)
+                    .listRowBackground(Color.appBackground)
             }
             
             ComposeAttachmentsList(
                 draft: draft
             )
             .listRowInsets(EdgeInsets(top: 4, leading: 8, bottom: 8, trailing: 8))
+            .listRowBackground(Color.appBackground)
         }
         .animation(.default, value: draft.poll?.options.count)
         .scrollDismissesKeyboardInteractivelyIfAvailable()
@@ -319,7 +328,7 @@ struct ComposeView: View {
     }
 }
 
-private extension View {
+extension View {
     @available(iOS, obsoleted: 16.0)
     @ViewBuilder
     func scrollDismissesKeyboardInteractivelyIfAvailable() -> some View {

Tusker/Screens/Compose/MainComposeTextView.swift

@@ -38,10 +38,11 @@ struct MainComposeTextView: View {
     @Binding var becomeFirstResponder: Bool
     @State private var hasFirstAppeared = false
     @ScaledMetric private var fontSize = 20
+    @Environment(\.colorScheme) private var colorScheme
     
     var body: some View {
         ZStack(alignment: .topLeading) {
-            Color(UIColor.secondarySystemBackground)
+            colorScheme == .dark ? Color.appFill : Color(uiColor: .secondarySystemBackground)
             
             if draft.text.isEmpty {
                 placeholder

Tusker/Screens/Conversation/ConversationCollectionViewController.swift

@@ -37,7 +37,7 @@ class ConversationCollectionViewController: UIViewController, CollectionViewCont
     
     override func loadView() {
         var config = UICollectionLayoutListConfiguration(appearance: .plain)
-        config.backgroundColor = .secondarySystemBackground
+        config.backgroundColor = .appSecondaryBackground
         config.leadingSwipeActionsConfigurationProvider = { [unowned self] in
             (collectionView.cellForItem(at: $0) as? TimelineStatusCollectionViewCell)?.leadingSwipeActions()
         }
@@ -59,7 +59,7 @@ class ConversationCollectionViewController: UIViewController, CollectionViewCont
         }
         // we're not using contenetInsetsReference = .readableContent here because it always insets the cells even if
         // the collection view's actual width is narrow enough to fit in the readable width, resulting in a bit of the
-        // background color always peaking through the edges
+        // background color always peeking through the edges
         let layout = UICollectionViewCompositionalLayout.list(using: config)
         view = UICollectionView(frame: .zero, collectionViewLayout: layout)
         // something about the autoresizing mask breaks resizing the vc

Tusker/Screens/Conversation/ConversationViewController.swift

@@ -94,7 +94,7 @@ class ConversationViewController: UIViewController {
         
         title = NSLocalizedString("Conversation", comment: "conversation screen title")
 
-        view.backgroundColor = .secondarySystemBackground
+        view.backgroundColor = .appSecondaryBackground
         
         collapseBarButtonItem = UIBarButtonItem(image: UIImage(systemName: "eye.fill")!, style: .plain, target: self, action: #selector(toggleCollapseButtonPressed))
         updateVisibilityBarButtonItem()

Tusker/Screens/Conversation/ExpandThreadCollectionViewCell.swift

@@ -141,18 +141,13 @@ class ExpandThreadCollectionViewCell: UICollectionViewListCell {
     }
     
     override func updateConfiguration(using state: UICellConfigurationState) {
-        var config = UIBackgroundConfiguration.listPlainCell()
+        var config = UIBackgroundConfiguration.listPlainCell().updated(for: state)
         if state.isSelected || state.isHighlighted {
-            var hue: CGFloat = 0
+            config.backgroundColor = .appSelectedCellBackground
-            var saturation: CGFloat = 0
-            var brightness: CGFloat = 0
-            UIColor.secondarySystemBackground.getHue(&hue, saturation: &saturation, brightness: &brightness, alpha: nil)
-            let sign: CGFloat = traitCollection.userInterfaceStyle == .dark ? 1 : -1
-            config.backgroundColor = UIColor(hue: hue, saturation: saturation, brightness: max(0, brightness + sign * 0.1), alpha: 1)
         } else {
-            config.backgroundColor = .secondarySystemBackground
+            config.backgroundColor = .appSecondaryBackground
         }
-        backgroundConfiguration = config.updated(for: state)
+        backgroundConfiguration = config
     }
     
 }

Tusker/Screens/Customize Timelines/AddHashtagPinnedTimelineView.swift

@@ -9,6 +9,20 @@
 import SwiftUI
 import Pachyderm
 
+@available(iOS, obsoleted: 16.0)
+struct AddHashtagPinnedTimelineRepresentable: UIViewControllerRepresentable {
+    typealias UIViewControllerType = UIHostingController<AddHashtagPinnedTimelineView>
+    
+    @Binding var pinnedTimelines: [PinnedTimeline]
+    
+    func makeUIViewController(context: Context) -> UIHostingController<AddHashtagPinnedTimelineView> {
+        return UIHostingController(rootView: AddHashtagPinnedTimelineView(pinnedTimelines: $pinnedTimelines))
+    }
+    
+    func updateUIViewController(_ uiViewController: UIHostingController<AddHashtagPinnedTimelineView>, context: Context) {
+    }
+}
+
 struct AddHashtagPinnedTimelineView: View {
     @EnvironmentObject private var mastodonController: MastodonController
     @Environment(\.dismiss) private var dismiss
@@ -34,6 +48,8 @@ struct AddHashtagPinnedTimelineView: View {
     var body: some View {
         NavigationView {
             list
+                .listStyle(.grouped)
+                .appGroupedListBackground(container: AddHashtagPinnedTimelineRepresentable.UIViewControllerType.self)
                 .navigationTitle("Add Hashtag")
                 .navigationBarTitleDisplayMode(.inline)
                 .searchable(text: $viewModel.searchQuery, placement: .navigationBarDrawer(displayMode: .always), prompt: Text("Search for hashtags"))
@@ -57,8 +73,9 @@ struct AddHashtagPinnedTimelineView: View {
         })
     }
     
+    @ViewBuilder
     private var list: some View {
-        List {
+        let list = List {
             Section {
                 if viewModel.searchQuery.isEmpty {
                     forEachTag(savedAndFollowedHashtags)
@@ -73,8 +90,17 @@ struct AddHashtagPinnedTimelineView: View {
                         .listRowBackground(EmptyView())
                         .listRowSeparator(.hidden)
             }
+            .appGroupedListRowBackground()
         }
         .listStyle(.grouped)
+        
+        if #available(iOS 16.0, *) {
+            list
+                .scrollContentBackground(.hidden)
+                .background(Color.appGroupedBackground)
+        } else {
+            list
+        }
     }
     
     private func forEachTag(_ tags: [String]) -> some View {

Tusker/Screens/Customize Timelines/CustomizeTimelinesView.swift

@@ -51,6 +51,7 @@ struct CustomizeTimelinesList: View {
     private var navigationBody: some View {
         List {
             PinnedTimelinesView(accountPreferences: mastodonController.accountPreferences)
+                .appGroupedListRowBackground()
             
             Section {
                 Toggle(isOn: $preferences.hideReblogsInTimelines) {
@@ -62,6 +63,7 @@ struct CustomizeTimelinesList: View {
             } header: {
                 Text("Home Timeline")
             }
+            .appGroupedListRowBackground()
             
             Section {
                 filtersForEach(unexpiredFilters)
@@ -75,6 +77,7 @@ struct CustomizeTimelinesList: View {
             } header: {
                 Text("Active Filters")
             }
+            .appGroupedListRowBackground()
             
             if !expiredFilters.isEmpty {
                 Section {
@@ -82,8 +85,11 @@ struct CustomizeTimelinesList: View {
                 } header: {
                     Text("Expired Filters")
                 }
+                .appGroupedListRowBackground()
             }
         }
+        .listStyle(.insetGrouped)
+        .appGroupedListBackground(container: UIHostingController<CustomizeTimelinesList>.self)
         .navigationTitle(Text("Customize Timelines"))
         .navigationBarTitleDisplayMode(.inline)
         .toolbar {

Tusker/Screens/Customize Timelines/EditFilterView.swift

@@ -72,6 +72,7 @@ struct EditFilterView: View {
                         filter.title = newValue
                     }))
                 }
+                .appGroupedListRowBackground()
             }
             
             Section {
@@ -96,6 +97,7 @@ struct EditFilterView: View {
                     }
                 }
             }
+            .appGroupedListRowBackground()
             
             Section {
                 if mastodonController.instanceFeatures.filtersV2 {
@@ -120,6 +122,7 @@ struct EditFilterView: View {
                     }
                 }
             }
+            .appGroupedListRowBackground()
             
             Section {
                 ForEach(FilterV1.Context.allCases, id: \.rawValue) { context in
@@ -141,7 +144,10 @@ struct EditFilterView: View {
             } header: {
                 Text("Contexts")
             }
+            .appGroupedListRowBackground()
         }
+        .appGroupedListBackground(container: UIHostingController<CustomizeTimelinesList>.self)
+        .scrollDismissesKeyboardInteractivelyIfAvailable()
         .navigationTitle(create ? "Add Filter" : "Edit Filter")
         .navigationBarTitleDisplayMode(.inline)
         .toolbar {

Tusker/Screens/Customize Timelines/PinnedTimelinesView.swift

@@ -111,7 +111,13 @@ struct PinnedTimelinesView: View {
             Text("Pinned Timelines")
         }
         .sheet(isPresented: $isShowingAddHashtagSheet, content: {
+            if #available(iOS 16.0, *) {
                 AddHashtagPinnedTimelineView(pinnedTimelines: $pinnedTimelines)
+                    .edgesIgnoringSafeArea(.bottom)
+            } else {
+                AddHashtagPinnedTimelineRepresentable(pinnedTimelines: $pinnedTimelines)
+                    .edgesIgnoringSafeArea(.bottom)
+            }
         })
         .sheet(isPresented: $isShowingAddInstanceSheet, content: {
             AddInstancePinnedTimelineView(pinnedTimelines: $pinnedTimelines)

Tusker/Screens/Explore/AddSavedHashtagViewController.swift

@@ -34,15 +34,15 @@ class AddSavedHashtagViewController: UIViewController {
 
         title = NSLocalizedString("Search", comment: "search screen title")
         
-        view.backgroundColor = .systemGroupedBackground
-        
         var config = UICollectionLayoutListConfiguration(appearance: .grouped)
+        config.backgroundColor = .appGroupedBackground
         config.headerMode = .supplementary
         let layout = UICollectionViewCompositionalLayout.list(using: config)
         collectionView = UICollectionView(frame: view.bounds, collectionViewLayout: layout)
         collectionView.autoresizingMask = [.flexibleWidth, .flexibleHeight]
         collectionView.delegate = self
         collectionView.allowsFocus = true
+        collectionView.backgroundColor = .appGroupedBackground
         view.addSubview(collectionView)
         
         let sectionHeaderCell = UICollectionView.SupplementaryRegistration<UICollectionViewListCell>(elementKind: UICollectionView.elementKindSectionHeader) { (headerView, collectionView, indexPath) in

Tusker/Screens/Explore/ExploreViewController.swift

@@ -43,7 +43,8 @@ class ExploreViewController: UIViewController, UICollectionViewDelegate, Collect
         super.viewDidLoad()
 
         var configuration = UICollectionLayoutListConfiguration(appearance: .insetGrouped)
-        configuration.trailingSwipeActionsConfigurationProvider = self.trailingSwipeActionsForCell(at:)
+        configuration.backgroundColor = .appGroupedBackground
+        configuration.trailingSwipeActionsConfigurationProvider = { [unowned self] in self.trailingSwipeActionsForCell(at: $0) }
         configuration.headerMode = .supplementary
         let layout = UICollectionViewCompositionalLayout.list(using: configuration)
         collectionView = UICollectionView(frame: view.bounds, collectionViewLayout: layout)
@@ -130,6 +131,16 @@ class ExploreViewController: UIViewController, UICollectionViewDelegate, Collect
             config.image = item.image
             cell.contentConfiguration = config
             
+            cell.configurationUpdateHandler = { cell, state in
+                var config = UIBackgroundConfiguration.listGroupedCell()
+                if state.isHighlighted || state.isSelected {
+                    config.backgroundColor = .appSelectedCellBackground
+                } else {
+                    config.backgroundColor = .appGroupedCellBackground
+                }
+                cell.backgroundConfiguration = config
+            }
+
             switch item {
             case .addList, .addSavedHashtag, .findInstance:
                 cell.accessories = []

Tusker/Screens/Explore/FeaturedProfileCollectionViewCell.swift

@@ -39,6 +39,7 @@ class FeaturedProfileCollectionViewCell: UICollectionViewCell {
         noteTextView.textContainerInset = UIEdgeInsets(top: 16, left: 4, bottom: 16, right: 4)
         
         backgroundColor = .clear
+        clippingView.backgroundColor = .appBackground
         clippingView.layer.cornerRadius = 5
         clippingView.layer.borderWidth = 1
         clippingView.layer.masksToBounds = true

Tusker/Screens/Explore/FeaturedProfileCollectionViewCell.xib

@@ -1,9 +1,9 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<document type="com.apple.InterfaceBuilder3.CocoaTouch.XIB" version="3.0" toolsVersion="19529" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" useTraitCollections="YES" useSafeAreas="YES" colorMatched="YES">
+<document type="com.apple.InterfaceBuilder3.CocoaTouch.XIB" version="3.0" toolsVersion="21507" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" useTraitCollections="YES" useSafeAreas="YES" colorMatched="YES">
     <device id="retina6_1" orientation="portrait" appearance="light"/>
     <dependencies>
         <deployment identifier="iOS"/>
-        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="19519"/>
+        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="21505"/>
         <capability name="Safe area layout guides" minToolsVersion="9.0"/>
         <capability name="System colors in document resources" minToolsVersion="11.0"/>
         <capability name="documents saved in the Xcode 8 format" minToolsVersion="8.0"/>
@@ -55,7 +55,6 @@
                             </label>
                             <textView clipsSubviews="YES" multipleTouchEnabled="YES" userInteractionEnabled="NO" contentMode="scaleToFill" verticalCompressionResistancePriority="749" scrollEnabled="NO" editable="NO" textAlignment="natural" selectable="NO" translatesAutoresizingMaskIntoConstraints="NO" id="bvj-F0-ggC" customClass="StatusContentTextView" customModule="Tusker" customModuleProvider="target">
                                 <rect key="frame" x="8" y="102" width="384" height="98"/>
-                                <color key="backgroundColor" systemColor="systemBackgroundColor"/>
                                 <string key="text">Lorem ipsum dolor sit er elit lamet, consectetaur cillium adipisicing pecu, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum. Nam liber te conscient to factor tum poen legum odioque civiuda.</string>
                                 <color key="textColor" systemColor="labelColor"/>
                                 <fontDescription key="fontDescription" type="system" pointSize="14"/>
@@ -102,7 +101,7 @@
     </objects>
     <resources>
         <systemColor name="labelColor">
-            <color white="0.0" alpha="1" colorSpace="custom" customColorSpace="genericGamma22GrayColorSpace"/>
+            <color red="0.0" green="0.0" blue="0.0" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
         </systemColor>
         <systemColor name="systemBackgroundColor">
             <color white="1" alpha="1" colorSpace="custom" customColorSpace="genericGamma22GrayColorSpace"/>

Tusker/Screens/Explore/ProfileDirectoryViewController.swift

@@ -64,7 +64,7 @@ class ProfileDirectoryViewController: UIViewController {
         
         collectionView = UICollectionView(frame: view.bounds, collectionViewLayout: layout)
         collectionView.autoresizingMask = [.flexibleWidth, .flexibleHeight]
-        collectionView.backgroundColor = .secondarySystemBackground
+        collectionView.backgroundColor = .appSecondaryBackground
         collectionView.register(UINib(nibName: "FeaturedProfileCollectionViewCell", bundle: .main), forCellWithReuseIdentifier: "featuredProfileCell")
         collectionView.delegate = self
         collectionView.dragDelegate = self

Tusker/Screens/Explore/SuggestedProfileCardCollectionViewCell.swift

@@ -36,6 +36,7 @@ class SuggestedProfileCardCollectionViewCell: UICollectionViewCell {
         layer.shadowOffset = .zero
         layer.masksToBounds = false
         contentView.layer.cornerRadius = 12.5
+        contentView.backgroundColor = .appGroupedCellBackground
         updateLayerColors()
         
         headerImageView.cache = .headers

Tusker/Screens/Explore/TrendingLinkCardCollectionViewCell.swift

@@ -34,6 +34,7 @@ class TrendingLinkCardCollectionViewCell: UICollectionViewCell {
         layer.shadowOffset = .zero
         layer.masksToBounds = false
         contentView.layer.cornerRadius = 12.5
+        contentView.backgroundColor = .appGroupedCellBackground
         updateLayerColors()
         
         addGestureRecognizer(UIHoverGestureRecognizer(target: self, action: #selector(hoverRecognized)))

Tusker/Screens/Explore/TrendingLinkTableViewCell.swift

@@ -80,6 +80,16 @@ class TrendingLinkTableViewCell: UITableViewCell {
         thumbnailView.layer.cornerRadius = 0.05 * thumbnailView.bounds.width
     }
     
+    override func updateConfiguration(using state: UICellConfigurationState) {
+        var config = UIBackgroundConfiguration.listGroupedCell().updated(for: state)
+        if state.isHighlighted || state.isSelected {
+            config.backgroundColor = .appSelectedCellBackground
+        } else {
+            config.backgroundColor = .appGroupedCellBackground
+        }
+        backgroundConfiguration = config
+    }
+
     func updateUI(card: Card) {
         self.card = card
         self.thumbnailView.image = nil

Tusker/Screens/Explore/TrendingLinksViewController.swift

@@ -37,6 +37,7 @@ class TrendingLinksViewController: EnhancedTableViewController {
         tableView.register(TrendingLinkTableViewCell.self, forCellReuseIdentifier: "trendingLinkCell")
         tableView.estimatedRowHeight = 100
         tableView.allowsFocus = true
+        tableView.backgroundColor = .appGroupedBackground
         
         dataSource = UITableViewDiffableDataSource(tableView: tableView, cellProvider: { tableView, indexPath, item in
             let cell = tableView.dequeueReusableCell(withIdentifier: "trendingLinkCell", for: indexPath) as! TrendingLinkTableViewCell

Tusker/Screens/Explore/TrendsViewController.swift

@@ -45,6 +45,7 @@ class TrendsViewController: UIViewController, CollectionViewController {
             case .trendingHashtags:
                 var listConfig = UICollectionLayoutListConfiguration(appearance: .grouped)
                 listConfig.headerMode = .supplementary
+                listConfig.backgroundColor = .appGroupedBackground
                 return .list(using: listConfig, layoutEnvironment: environment)
                 
             case .trendingLinks:
@@ -78,6 +79,7 @@ class TrendsViewController: UIViewController, CollectionViewController {
             case .trendingStatuses:
                 var listConfig = UICollectionLayoutListConfiguration(appearance: .grouped)
                 listConfig.headerMode = .supplementary
+                listConfig.backgroundColor = .appGroupedBackground
                 return .list(using: listConfig, layoutEnvironment: environment)
             }
         }
@@ -85,7 +87,7 @@ class TrendsViewController: UIViewController, CollectionViewController {
         collectionView.autoresizingMask = [.flexibleWidth, .flexibleHeight]
         collectionView.delegate = self
         collectionView.dragDelegate = self
-        collectionView.backgroundColor = .secondarySystemBackground
+        collectionView.backgroundColor = .appGroupedBackground
         collectionView.allowsFocus = true
         view.addSubview(collectionView)
         
@@ -108,7 +110,7 @@ class TrendsViewController: UIViewController, CollectionViewController {
         let trendingLinkCell = UICollectionView.CellRegistration<TrendingLinkCardCollectionViewCell, Card>(cellNib: UINib(nibName: "TrendingLinkCardCollectionViewCell", bundle: .main)) { (cell, indexPath, card) in
             cell.updateUI(card: card)
         }
-        let statusCell = UICollectionView.CellRegistration<TimelineStatusCollectionViewCell, (String, CollapseState)> { [unowned self] cell, indexPath, item in
+        let statusCell = UICollectionView.CellRegistration<TrendingStatusCollectionViewCell, (String, CollapseState)> { [unowned self] cell, indexPath, item in
             cell.delegate = self
             // TODO: filter trends
             cell.updateUI(statusID: item.0, state: item.1, filterResult: .allow, precomputedContent: nil)

Tusker/Screens/Lists/EditListAccountsViewController.swift

@@ -54,6 +54,7 @@ class EditListAccountsViewController: EnhancedTableViewController {
         tableView.rowHeight = UITableView.automaticDimension
         tableView.estimatedRowHeight = 66
         tableView.allowsSelection = false
+        tableView.backgroundColor = .appGroupedBackground
         
         dataSource = DataSource(tableView: tableView, cellProvider: { (tableView, indexPath, item) -> UITableViewCell? in
             guard case let .account(id) = item else { fatalError() }
@@ -61,6 +62,15 @@ class EditListAccountsViewController: EnhancedTableViewController {
             let cell = tableView.dequeueReusableCell(withIdentifier: "accountCell", for: indexPath) as! AccountTableViewCell
             cell.delegate = self
             cell.updateUI(accountID: id)
+            cell.configurationUpdateHandler = { cell, state in
+                var config = UIBackgroundConfiguration.listGroupedCell().updated(for: state)
+                if state.isHighlighted || state.isSelected {
+                    config.backgroundColor = .appSelectedCellBackground
+                } else {
+                    config.backgroundColor = .appGroupedCellBackground
+                }
+                cell.backgroundConfiguration = config
+            }
             return cell
         })
         dataSource.editListAccountsController = self

Tusker/Screens/Local Predicate Statuses List/LocalPredicateStatusesViewController.swift

@@ -45,6 +45,7 @@ class LocalPredicateStatusesViewController: UIViewController, CollectionViewCont
     
     override func loadView() {
         var config = UICollectionLayoutListConfiguration(appearance: .plain)
+        config.backgroundColor = .appBackground
         config.leadingSwipeActionsConfigurationProvider = { [unowned self] in
             (collectionView.cellForItem(at: $0) as? TimelineStatusCollectionViewCell)?.leadingSwipeActions()
         }

Tusker/Screens/Mute/MuteAccountView.swift

@@ -85,6 +85,7 @@ struct MuteAccountView: View {
                     Text("This user's posts will be hidden from your timeline. You can still receive notifications from them.")
                 }
             }
+            .appGroupedListRowBackground()
             
             Section {
                 Picker(selection: $duration) {
@@ -99,6 +100,7 @@ struct MuteAccountView: View {
                     Text("The mute will automatically be removed after the selected time.")
                 }
             }
+            .appGroupedListRowBackground()
 
             Button(action: self.mute) {
                 if isMuting {
@@ -113,7 +115,9 @@ struct MuteAccountView: View {
                 }
             }
             .disabled(isMuting)
+            .appGroupedListRowBackground()
         }
+        .appGroupedListBackground(container: UIHostingController<MuteAccountView>.self)
         .alertWithData("Erorr Muting", data: $error, actions: { error in
             Button("OK") {}
         }, message: { error in

Tusker/Screens/Notifications/NotificationsTableViewController.swift

@@ -58,6 +58,7 @@ class NotificationsTableViewController: DiffableTimelineLikeTableViewController<
         
         tableView.cellLayoutMarginsFollowReadableWidth = UIDevice.current.userInterfaceIdiom == .pad || UIDevice.current.userInterfaceIdiom == .mac
         tableView.allowsFocus = true
+        tableView.backgroundColor = .appBackground
         
         NotificationCenter.default.addObserver(self, selector: #selector(handleStatusDeleted), name: .statusDeleted, object: nil)
     }

Tusker/Screens/Onboarding/InstanceSelectorTableViewController.swift

@@ -63,6 +63,7 @@ class InstanceSelectorTableViewController: UITableViewController {
         appearance.configureWithDefaultBackground()
         navigationItem.scrollEdgeAppearance = appearance
 
+        tableView.backgroundColor = .appGroupedBackground
         tableView.keyboardDismissMode = .interactive
         tableView.register(UINib(nibName: "InstanceTableViewCell", bundle: .main), forCellReuseIdentifier: instanceCell)
         tableView.rowHeight = UITableView.automaticDimension
@@ -107,6 +108,10 @@ class InstanceSelectorTableViewController: UITableViewController {
             }
             .debounce(for: .seconds(1), scheduler: RunLoop.main)
             .sink { [weak self] in self?.updateSpecificInstance(domain: $0) }
+    }
+    
+    override func viewWillAppear(_ animated: Bool) {
+        super.viewWillAppear(animated)
         
         loadRecommendedInstances()
     }
@@ -203,7 +208,7 @@ class InstanceSelectorTableViewController: UITableViewController {
     private func createActivityIndicatorHeader() {
         let header = UITableViewHeaderFooterView()
         header.translatesAutoresizingMaskIntoConstraints = false
-        header.contentView.backgroundColor = .systemGroupedBackground
+        header.contentView.backgroundColor = .appGroupedBackground
         
         activityIndicator = UIActivityIndicatorView(style: .large)
         activityIndicator.translatesAutoresizingMaskIntoConstraints = false

Tusker/Screens/Preferences/About/AboutView.swift

@@ -42,6 +42,7 @@ struct AboutView: View {
                     }
                 }
             }
+            .appGroupedListRowBackground()
             
             Section {
                 Link("Website", destination: URL(string: "https://vaccor.space/tusker")!)
@@ -67,7 +68,10 @@ struct AboutView: View {
                 Link("Source Code", destination: URL(string: "https://git.shadowfacts.net/shadowfacts/Tusker")!)
                 Link("Issue Tracker", destination: URL(string: "https://git.shadowfacts.net/shadowfacts/Tusker/issues")!)
             }
+            .appGroupedListRowBackground()
         }
+        .listStyle(.insetGrouped)
+        .appGroupedListBackground(container: PreferencesNavigationController.self)
         .sheet(isPresented: $isShowingMailSheet) {
             MailSheet(logData: logData)
         }

Tusker/Screens/Preferences/AcknowledgementsView.swift

@@ -14,6 +14,7 @@ struct AcknowledgementsView: View {
             Text(text)
                 .padding(.horizontal, 16)
         }
+        .appGroupedListBackground(container: PreferencesNavigationController.self)
         .navigationTitle("Acknowledgements")
     }
     

Tusker/Screens/Preferences/AdvancedPrefsView.swift

@@ -23,7 +23,8 @@ struct AdvancedPrefsView : View {
             errorReportingSection
             cachingSection
         }
-        .listStyle(InsetGroupedListStyle())
+        .listStyle(.insetGrouped)
+        .appGroupedListBackground(container: PreferencesNavigationController.self)
         .navigationBarTitle(Text("Advanced"))
     }
     
@@ -50,6 +51,7 @@ struct AdvancedPrefsView : View {
                 // see FB6838291
             }
         }
+        .appGroupedListRowBackground()
     }
     
     var cloudKitSection: some View {
@@ -74,7 +76,9 @@ struct AdvancedPrefsView : View {
                     Text(String(describing: cloudKitStatus!))
                 }
             }
-        }.task {
+        }
+        .appGroupedListRowBackground()
+        .task {
             CKContainer.default().accountStatus { status, error in
                 if let error {
                     Logging.general.error("Unable to get CloudKit status: \(String(describing: error))")
@@ -99,6 +103,7 @@ struct AdvancedPrefsView : View {
                     .lineLimit(nil)
             }
         }
+        .appGroupedListRowBackground()
     }
     
     var cachingSection: some View {
@@ -120,7 +125,9 @@ struct AdvancedPrefsView : View {
                 s += AttributedString("\nMastodon cache size: \(ByteCountFormatter().string(fromByteCount: mastodonCacheSize))")
             }
             return Text(s)
-        }.task {
+        }
+        .appGroupedListRowBackground()
+        .task {
             imageCacheSize = [
                 ImageCache.avatars,
                 .headers,

Tusker/Screens/Preferences/AppearancePrefsView.swift

@@ -6,21 +6,19 @@
 //
 
 import SwiftUI
+import Combine
 
 struct AppearancePrefsView : View {
     @ObservedObject var preferences = Preferences.shared
 
-    private var theme: Binding<UIUserInterfaceStyle> = Binding(get: {
+    private var appearanceChangePublisher: some Publisher<Void, Never> {
-        Preferences.shared.theme
+        preferences.$theme
-    }, set: {
+            .map { _ in () }
-        Preferences.shared.theme = $0
+            .merge(with: preferences.$pureBlackDarkMode.map { _ in () },
-        NotificationCenter.default.post(name: .themePreferenceChanged, object: nil)
+                   preferences.$accentColor.map { _ in () }
-    })
+            )
-    private var accentColor: Binding<Preferences.AccentColor> = Binding {
+            // the prefrence publishers are all willSet, but want to notify after the change, so wait one runloop iteration
-        Preferences.shared.accentColor
+            .receive(on: DispatchQueue.main)
-    } set: {
-        Preferences.shared.accentColor = $0
-        NotificationCenter.default.post(name: .themePreferenceChanged, object: nil)
     }
     
     private var useCircularAvatars: Binding<Bool> = Binding(get: {
@@ -50,19 +48,27 @@ struct AppearancePrefsView : View {
             accountsSection
             postsSection
         }
-        .listStyle(InsetGroupedListStyle())
+        .listStyle(.insetGrouped)
+        .appGroupedListBackground(container: PreferencesNavigationController.self)
         .navigationBarTitle(Text("Appearance"))
     }
     
     private var themeSection: some View {
         Section {
-            Picker(selection: theme, label: Text("Theme")) {
+            Picker(selection: $preferences.theme, label: Text("Theme")) {
                 Text("Use System Theme").tag(UIUserInterfaceStyle.unspecified)
                 Text("Light").tag(UIUserInterfaceStyle.light)
                 Text("Dark").tag(UIUserInterfaceStyle.dark)
             }
             
-            Picker(selection: accentColor, label: Text("Accent Color")) {
+            // macOS system dark mode isn't pure black, so this isn't necessary
+            if !ProcessInfo.processInfo.isMacCatalystApp && !ProcessInfo.processInfo.isiOSAppOnMac {
+                Toggle(isOn: $preferences.pureBlackDarkMode) {
+                    Text("Pure Black Dark Mode")
+                }
+            }
+            
+            Picker(selection: $preferences.accentColor, label: Text("Accent Color")) {
                 ForEach(accentColorsAndImages, id: \.0.rawValue) { (color, image) in
                     HStack {
                         Text(color.name)
@@ -75,6 +81,10 @@ struct AppearancePrefsView : View {
                 }
             }
         }
+        .onReceive(appearanceChangePublisher) { _ in
+            NotificationCenter.default.post(name: .themePreferenceChanged, object: nil)
+        }
+        .appGroupedListRowBackground()
     }
     
     private var accountsSection: some View {
@@ -86,6 +96,7 @@ struct AppearancePrefsView : View {
                 Text("Hide Custom Emoji in Usernames")
             }
         }
+        .appGroupedListRowBackground()
     }
     
     private var postsSection: some View {
@@ -113,6 +124,7 @@ struct AppearancePrefsView : View {
                     .navigationTitle("Trailing Swipe Actions")
             }
         }
+        .appGroupedListRowBackground()
     }
 }
 

Tusker/Screens/Preferences/BehaviorPrefsView.swift

@@ -18,7 +18,8 @@ struct BehaviorPrefsView: View {
             linksSection
             contentWarningsSection
         }
-        .listStyle(InsetGroupedListStyle())
+        .listStyle(.insetGrouped)
+        .appGroupedListBackground(container: PreferencesNavigationController.self)
         .navigationBarTitle(Text("Behavior"))
     }
     
@@ -28,6 +29,7 @@ struct BehaviorPrefsView: View {
                 Text("Require Confirmation Before Reblogging")
             }
         }
+        .appGroupedListRowBackground()
     }
     
     private var timelineSection: some View {
@@ -38,6 +40,7 @@ struct BehaviorPrefsView: View {
         } header: {
             Text("Timeline")
         }
+        .appGroupedListRowBackground()
     }
 
     private var linksSection: some View {
@@ -52,6 +55,7 @@ struct BehaviorPrefsView: View {
                 Text("Always Use Reader Mode in In-App Safari")
             }.disabled(!preferences.useInAppSafari)
         }
+        .appGroupedListRowBackground()
     }
     
     private var contentWarningsSection: some View {
@@ -68,6 +72,7 @@ struct BehaviorPrefsView: View {
                 Text(preferences.expandAllContentWarnings ? "Collapse Posts with Keywords in CWs" : "Expand Posts with Keywords in CWs")
             }
         }
+        .appGroupedListRowBackground()
     }
 }
 

Tusker/Screens/Preferences/ComposingPrefsView.swift

@@ -19,7 +19,8 @@ struct ComposingPrefsView: View {
             replyingSection
             writingSection
         }
-        .listStyle(InsetGroupedListStyle())
+        .listStyle(.insetGrouped)
+        .appGroupedListBackground(container: PreferencesNavigationController.self)
         .navigationBarTitle("Composing")
     }
     
@@ -51,6 +52,7 @@ struct ComposingPrefsView: View {
         } footer: {
             Text("When starting a reply, Tusker will use your preferred visibility or the visibility of the post to which you're replying, whichever is narrower.")
         }
+        .appGroupedListRowBackground()
     }
     
     var composingSection: some View {
@@ -62,6 +64,7 @@ struct ComposingPrefsView: View {
                 Text("Require Attachment Descriptions")
             }
         }
+        .appGroupedListRowBackground()
     }
     
     var replyingSection: some View {
@@ -75,6 +78,7 @@ struct ComposingPrefsView: View {
                 Text("Mention Reblogger")
             }
         }
+        .appGroupedListRowBackground()
     }
     
     var writingSection: some View {
@@ -83,6 +87,7 @@ struct ComposingPrefsView: View {
                 Text("Show @ and # on Keyboard")
             }
         }
+        .appGroupedListRowBackground()
     }
 
 }

Tusker/Screens/Preferences/MediaPrefsView.swift

@@ -15,7 +15,8 @@ struct MediaPrefsView: View {
         List {
             viewingSection
         }
-        .listStyle(InsetGroupedListStyle())
+        .listStyle(.insetGrouped)
+        .appGroupedListBackground(container: PreferencesNavigationController.self)
         .navigationBarTitle("Media")
     }
     
@@ -42,6 +43,7 @@ struct MediaPrefsView: View {
                 Text("Show Uncropped Media Inline")
             }
         }
+        .appGroupedListRowBackground()
     }
 }
 

Tusker/Screens/Preferences/OppositeCollapseKeywordsView.swift

@@ -23,8 +23,8 @@ struct OppositeCollapseKeywordsView: View {
         ZStack {
             // the background from the grouped ListStyle clips to the safe area, so when the keyboard is hiding/showing
             // the color behind it can be seen, which looks odd
-            Color(UIColor.secondarySystemBackground)
+//            Color(UIColor.secondarySystemBackground)
-                .edgesIgnoringSafeArea(.bottom)
+//                .edgesIgnoringSafeArea(.bottom)
             
             List {
                 Section(footer: Text("A post matches if its content warning contains the text of a keyword, ignoring case.")) {
@@ -37,9 +37,11 @@ struct OppositeCollapseKeywordsView: View {
                     
                     FocusableTextField(placeholder: "Add Keyword", text: $valueToAdd, becomeFirstResponder: $makeAddFieldFirstResponder, onCommit: self.addKeyword)
                 }
+                .appGroupedListRowBackground()
             }
             .animation(.default, value: keywords.map(\.id))
-            .listStyle(GroupedListStyle())
+            .listStyle(.grouped)
+            .appGroupedListBackground(container: PreferencesNavigationController.self)
         }
         .onAppear(perform: updateAppearance)
         .navigationBarTitle(preferences.expandAllContentWarnings ? "Collapse Post CW Keywords" : "Expand Post CW Keywords")

Tusker/Screens/Preferences/PreferencesView.swift

@@ -24,6 +24,7 @@ struct PreferencesView: View {
             aboutSection
         }
         .listStyle(.insetGrouped)
+        .appGroupedListBackground(container: PreferencesNavigationController.self)
         .navigationBarTitle("Preferences")
         .navigationBarTitleDisplayMode(.inline)
     }
@@ -84,6 +85,7 @@ struct PreferencesView: View {
         } header: {
             Text("Accounts")
         }
+        .appGroupedListRowBackground()
     }
     
     private var preferencesSection: some View {
@@ -107,6 +109,7 @@ struct PreferencesView: View {
                 Text("Advanced")
             }
         }
+        .appGroupedListRowBackground()
     }
     
     private var aboutSection: some View {
@@ -121,6 +124,7 @@ struct PreferencesView: View {
                 AcknowledgementsView()
             }
         }
+        .appGroupedListRowBackground()
     }
     
     func logoutPressed() {

Tusker/Screens/Preferences/SwipeActionsPrefsView.swift

@@ -42,6 +42,7 @@ class SwipeActionsPrefsViewController: UIViewController, UICollectionViewDelegat
     override func loadView() {
         let layout = UICollectionViewCompositionalLayout { [unowned self] sectionIndex, environment in
             var config = UICollectionLayoutListConfiguration(appearance: .insetGrouped)
+            config.backgroundColor = .appGroupedBackground
             if dataSource.sectionIdentifier(for: sectionIndex) == .selected {
                 config.headerMode = .supplementary
             }
@@ -59,6 +60,15 @@ class SwipeActionsPrefsViewController: UIViewController, UICollectionViewDelegat
             config.image = UIImage(systemName: item.systemImageName)
             cell.contentConfiguration = config
             cell.accessories = [.reorder(displayed: .always)]
+            cell.configurationUpdateHandler = { cell, state in
+                var config = UIBackgroundConfiguration.listGroupedCell().updated(for: state)
+                if state.isHighlighted || state.isSelected {
+                    config.backgroundColor = .appSelectedCellBackground
+                } else {
+                    config.backgroundColor = .appGroupedCellBackground
+                }
+                cell.backgroundConfiguration = config
+            }
         }
         let dataSource = UICollectionViewDiffableDataSource<Section, Item>(collectionView: collectionView) { collectionView, indexPath, itemIdentifier in
             return collectionView.dequeueConfiguredReusableCell(using: listCell, for: indexPath, item: itemIdentifier)

Tusker/Screens/Preferences/Tip Jar/TipJarView.swift

@@ -26,8 +26,12 @@ struct TipJarView: View {
     @StateObject private var observer = UbiquitousKeyValueStoreObserver()
     
     var body: some View {
+        ZStack {
+            Color.appGroupedBackground
+                .edgesIgnoringSafeArea(.all)
+            
             productsView
-        .overlay {
+            
             if showConfetti {
                 ConfettiView()
                     .transition(.opacity.animation(.default))

Tusker/Screens/Preferences/WellnessPrefsView.swift

@@ -19,7 +19,8 @@ struct WellnessPrefsView: View {
             disableInfiniteScrolling
             hideTrends
         }
-        .listStyle(InsetGroupedListStyle())
+        .listStyle(.insetGrouped)
+        .appGroupedListBackground(container: PreferencesNavigationController.self)
         .navigationBarTitle(Text("Digital Wellness"))
     }
     
@@ -29,6 +30,7 @@ struct WellnessPrefsView: View {
                 Text("Favorite and Reblog Counts in Conversations")
             }
         }
+        .appGroupedListRowBackground()
     }
     
     private var notificationsMode: some View {
@@ -39,6 +41,7 @@ struct WellnessPrefsView: View {
                 }
             }
         }
+        .appGroupedListRowBackground()
     }
     
     private var grayscaleImages: some View {
@@ -47,6 +50,7 @@ struct WellnessPrefsView: View {
                 Text("Grayscale Images")
             }
         }
+        .appGroupedListRowBackground()
     }
     
     private var disableInfiniteScrolling: some View {
@@ -55,6 +59,7 @@ struct WellnessPrefsView: View {
                 Text("Disable Infinite Scrolling")
             }
         }
+        .appGroupedListRowBackground()
     }
     
     private var hideTrends: some View {
@@ -63,6 +68,7 @@ struct WellnessPrefsView: View {
                 Text("Hide Trends")
             }
         }
+        .appGroupedListRowBackground()
     }
 }
 

Tusker/Screens/Profile/ProfileHeaderCollectionViewCell.swift

@@ -23,7 +23,7 @@ class ProfileHeaderCollectionViewCell: UICollectionViewCell {
     override init(frame: CGRect) {
         super.init(frame: frame)
         
-        contentView.backgroundColor = .systemBackground
+        contentView.backgroundColor = .appBackground
         isOpaque = true
         contentView.isOpaque = true
     }

Tusker/Screens/Profile/ProfileStatusesViewController.swift

@@ -56,6 +56,7 @@ class ProfileStatusesViewController: UIViewController, TimelineLikeCollectionVie
     
     override func loadView() {
         var config = UICollectionLayoutListConfiguration(appearance: .plain)
+        config.backgroundColor = .appBackground
         config.leadingSwipeActionsConfigurationProvider = { [unowned self] in
             (collectionView.cellForItem(at: $0) as? TimelineStatusCollectionViewCell)?.leadingSwipeActions()
         }
@@ -82,7 +83,9 @@ class ProfileStatusesViewController: UIViewController, TimelineLikeCollectionVie
         }
         let layout = UICollectionViewCompositionalLayout { [unowned self] sectionIndex, environment in
             if case .header = dataSource.sectionIdentifier(for: sectionIndex) {
-                return .list(using: .init(appearance: .plain), layoutEnvironment: environment)
+                var config = UICollectionLayoutListConfiguration(appearance: .plain)
+                config.backgroundColor = .appBackground
+                return .list(using: config, layoutEnvironment: environment)
             } else {
                 let section = NSCollectionLayoutSection.list(using: config, layoutEnvironment: environment)
                 if UIDevice.current.userInterfaceIdiom == .pad || UIDevice.current.userInterfaceIdiom == .mac {

Tusker/Screens/Profile/ProfileViewController.swift

@@ -68,7 +68,7 @@ class ProfileViewController: UIViewController {
     override func viewDidLoad() {
         super.viewDidLoad()
 
-        view.backgroundColor = .systemBackground
+        view.backgroundColor = .appBackground
         
         for pageController in pageControllers {
             pageController.profileHeaderDelegate = self

Tusker/Screens/Report/ReportAddStatusView.swift

@@ -34,8 +34,15 @@ struct ReportAddStatusView: View {
                         ReportStatusView(status: status, mastodonController: mastodonController)
                     }
                 }
+                .appGroupedListRowBackground()
             }
+            .modifier(ScrollBackgroundModifier())
         } else {
+            ZStack {
+                // because the background needs to fill the entire screen
+                Color.appGroupedBackground
+                    .edgesIgnoringSafeArea(.all)
+                
                 ProgressView()
                     .progressViewStyle(.circular)
                     .alertWithData("Error Loading Posts", data: $error, actions: { _ in
@@ -56,3 +63,28 @@ struct ReportAddStatusView: View {
             }
         }
     }
+}
+
+private struct ScrollBackgroundModifier: ViewModifier {
+    @Environment(\.colorScheme) private var colorScheme
+    
+    func body(content: Content) -> some View {
+        if #available(iOS 16.0, *) {
+            content
+                .scrollContentBackground(.hidden)
+                .background {
+                    // otherwise the pureBlackDarkMode isn't propagated, for some reason?
+                    // even though it is for ReportSelectRulesView??
+                    let traits: UITraitCollection = {
+                        let t = UITraitCollection(userInterfaceStyle: colorScheme == .dark ? .dark : .light)
+                        t.pureBlackDarkMode = true
+                        return t
+                    }()
+                    Color(uiColor: .appGroupedBackground.resolvedColor(with: traits))
+                        .edgesIgnoringSafeArea(.all)
+                }
+        } else {
+            content
+        }
+    }
+}

Tusker/Screens/Report/ReportSelectRulesView.swift

@@ -47,11 +47,27 @@ struct ReportSelectRulesView: View {
                         .foregroundColor(selectedRuleIDs.contains(rule.id) ? .accentColor : .clear)
                 }
             }
+            .appGroupedListRowBackground()
         }
+        .withAppBackgroundIfAvailable()
         .navigationTitle("Rules")
     }
 }
 
+private extension View {
+    @available(iOS, obsoleted: 16.0)
+    @ViewBuilder
+    func withAppBackgroundIfAvailable() -> some View {
+        if #available(iOS 16.0, *) {
+            self
+                .scrollContentBackground(.hidden)
+                .background(Color.appGroupedBackground)
+        } else {
+            self
+        }
+    }
+}
+
 //struct ReportSelectRulesView_Previews: PreviewProvider {
 //    static var previews: some View {
 //        ReportSelectRulesView()

Tusker/Screens/Report/ReportView.swift

@@ -32,6 +32,7 @@ struct ReportView: View {
         if #available(iOS 16.0, *) {
             NavigationStack {
                 navigationViewContent
+                    .scrollDismissesKeyboard(.interactively)
             }
         } else {
             NavigationView {
@@ -93,12 +94,14 @@ struct ReportView: View {
             } header: {
                 Text("Reason")
             }
+            .appGroupedListRowBackground()
             
             Section {
                 ComposeTextView(text: $report.comment, placeholder: Text("Add any additional comments"))
                     .backgroundColor(.clear)
                     .listRowInsets(EdgeInsets(top: 8, leading: 8, bottom: 8, trailing: 8))
             }
+            .appGroupedListRowBackground()
             
             Section {
                 ForEach(report.statusIDs, id: \.self) { id in
@@ -116,12 +119,14 @@ struct ReportView: View {
             } footer: {
                 Text("Attach posts to your report to provide additional context for moderators.")
             }
+            .appGroupedListRowBackground()
             
             Section {
                 Toggle("Forward", isOn: $report.forward)
             } footer: {
                 Text("You can choose to anonymously forward your report to the moderators of **\(account.url.host!)**.")
             }
+            .appGroupedListRowBackground()
 
             Button(action: self.sendReport) {
                 if isReporting {
@@ -134,7 +139,10 @@ struct ReportView: View {
                 }
             }
             .disabled(isReporting)
+            .appGroupedListRowBackground()
         }
+        .listStyle(.insetGrouped)
+        .appGroupedListBackground(container: UIHostingController<ReportView>.self, applyBackground: true)
         .alertWithData("Error Reporting", data: $error, actions: { error in
             Button("OK") {}
         }, message: { error in

Tusker/Screens/Search/SearchResultsViewController.swift

@@ -84,25 +84,37 @@ class SearchResultsViewController: EnhancedTableViewController {
         tableView.register(UINib(nibName: "HashtagTableViewCell", bundle: .main), forCellReuseIdentifier: hashtagCell)
         
         tableView.allowsFocus = true
+        tableView.backgroundColor = .appGroupedBackground
         
         dataSource = DataSource(tableView: tableView, cellProvider: { (tableView, indexPath, item) -> UITableViewCell? in
+            let cell: UITableViewCell
             switch item {
             case let .account(id):
-                let cell = tableView.dequeueReusableCell(withIdentifier: accountCell, for: indexPath) as! AccountTableViewCell
+                let accountCell = tableView.dequeueReusableCell(withIdentifier: accountCell, for: indexPath) as! AccountTableViewCell
-                cell.delegate = self
+                accountCell.delegate = self
-                cell.updateUI(accountID: id)
+                accountCell.updateUI(accountID: id)
-                return cell
+                cell = accountCell
             case let .hashtag(tag):
-                let cell = tableView.dequeueReusableCell(withIdentifier: hashtagCell, for: indexPath) as! HashtagTableViewCell
+                let hashtagCell = tableView.dequeueReusableCell(withIdentifier: hashtagCell, for: indexPath) as! HashtagTableViewCell
-                cell.delegate = self
+                hashtagCell.delegate = self
-                cell.updateUI(hashtag: tag)
+                hashtagCell.updateUI(hashtag: tag)
-                return cell
+                cell = hashtagCell
             case let .status(id, state):
-                let cell = tableView.dequeueReusableCell(withIdentifier: statusCell, for: indexPath) as! TimelineStatusTableViewCell
+                let statusCell = tableView.dequeueReusableCell(withIdentifier: statusCell, for: indexPath) as! TimelineStatusTableViewCell
-                cell.delegate = self
+                statusCell.delegate = self
-                cell.updateUI(statusID: id, state: state)
+                statusCell.updateUI(statusID: id, state: state)
-                return cell
+                cell = statusCell
             }
+            cell.configurationUpdateHandler = { cell, state in
+                var config = UIBackgroundConfiguration.listGroupedCell().updated(for: state)
+                if state.isHighlighted || state.isSelected {
+                    config.backgroundColor = .appSelectedCellBackground
+                } else {
+                    config.backgroundColor = .appGroupedCellBackground
+                }
+                cell.backgroundConfiguration = config
+            }
+            return cell
         })
         
         activityIndicator = UIActivityIndicatorView(style: .large)

Tusker/Screens/Status Action Account List/StatusActionAccountListCollectionViewController.swift

@@ -86,10 +86,30 @@ class StatusActionAccountListCollectionViewController: UIViewController, Collect
         let statusCell = UICollectionView.CellRegistration<TimelineStatusCollectionViewCell, (String, CollapseState)> { [unowned self] cell, indexPath, item in
             cell.delegate = self
             cell.updateUI(statusID: item.0, state: item.1, filterResult: .allow, precomputedContent: nil)
+            
+            cell.configurationUpdateHandler = { cell, state in
+                var config = UIBackgroundConfiguration.listGroupedCell().updated(for: state)
+                if state.isHighlighted || state.isSelected {
+                    config.backgroundColor = .appSelectedCellBackground
+                } else {
+                    config.backgroundColor = .appGroupedCellBackground
+                }
+                cell.backgroundConfiguration = config
+            }
         }
         let accountCell = UICollectionView.CellRegistration<AccountCollectionViewCell, String> { [unowned self] cell, indexPath, item in
             cell.delegate = self
             cell.updateUI(accountID: item)
+            
+            cell.configurationUpdateHandler = { cell, state in
+                var config = UIBackgroundConfiguration.listGroupedCell().updated(for: state)
+                if state.isHighlighted || state.isSelected {
+                    config.backgroundColor = .appSelectedCellBackground
+                } else {
+                    config.backgroundColor = .appGroupedCellBackground
+                }
+                cell.backgroundConfiguration = config
+            }
         }
         let loadingCell = UICollectionView.CellRegistration<LoadingCollectionViewCell, Void> { cell, indexPath, item in
             cell.indicator.startAnimating()

Tusker/Screens/Status Action Account List/StatusActionAccountListViewController.swift

@@ -88,7 +88,7 @@ class StatusActionAccountListViewController: UIViewController {
             title = NSLocalizedString("Reblogged By", comment: "status reblogged by accounts list title")
         }
 
-        view.backgroundColor = .systemBackground
+        view.backgroundColor = .appBackground
         
         NotificationCenter.default.addObserver(self, selector: #selector(handleStatusDeleted), name: .statusDeleted, object: nil)
     }

Tusker/Screens/Timeline/InstanceTimelineViewController.swift

@@ -102,7 +102,7 @@ class InstanceTimelineViewController: TimelineViewController {
         }
         
         collectionView.isHidden = true
-        view.backgroundColor = .systemBackground
+        view.backgroundColor = .appBackground
         
         let image = UIImageView(image: UIImage(systemName: "lock.fill"))
         image.tintColor = .secondaryLabel

Tusker/Screens/Timeline/TimelineGapCollectionViewCell.swift

@@ -19,7 +19,7 @@ class TimelineGapCollectionViewCell: UICollectionViewCell {
     
     override var isHighlighted: Bool {
         didSet {
-            backgroundColor = isHighlighted ? .systemFill : .systemGroupedBackground
+            backgroundColor = isHighlighted ? .appFill : .appGroupedBackground
         }
     }
     
@@ -38,7 +38,7 @@ class TimelineGapCollectionViewCell: UICollectionViewCell {
     override init(frame: CGRect) {
         super.init(frame: frame)
         
-        backgroundColor = .systemGroupedBackground
+        backgroundColor = .appGroupedBackground
         
         indicator.isHidden = true
         indicator.color = .tintColor

Tusker/Screens/Timeline/TimelineViewController.swift

@@ -63,6 +63,7 @@ class TimelineViewController: UIViewController, TimelineLikeCollectionViewContro
         super.viewDidLoad()
         
         var config = UICollectionLayoutListConfiguration(appearance: .plain)
+        config.backgroundColor = .appBackground
         config.leadingSwipeActionsConfigurationProvider = { [unowned self] in
             (collectionView.cellForItem(at: $0) as? TimelineStatusCollectionViewCell)?.leadingSwipeActions()
         }
@@ -99,6 +100,7 @@ class TimelineViewController: UIViewController, TimelineLikeCollectionViewContro
         collectionView.delegate = self
         collectionView.dragDelegate = self
         collectionView.allowsFocus = true
+        collectionView.backgroundColor = .appBackground
         collectionView.translatesAutoresizingMaskIntoConstraints = false
         view.addSubview(collectionView)
         NSLayoutConstraint.activate([

Tusker/Screens/Utilities/CustomAlertController.swift

@@ -47,7 +47,7 @@ class CustomAlertController: UIViewController {
         
         blurView = UIVisualEffectView(effect: UIBlurEffect(style: .systemChromeMaterial))
         
-        blurView.backgroundColor = .systemBackground
+        blurView.backgroundColor = .appBackground
         blurView.layer.cornerRadius = 15
         blurView.layer.cornerCurve = .continuous
         blurView.layer.masksToBounds = true

Tusker/Screens/Utilities/SegmentedPageViewController.swift

@@ -79,7 +79,7 @@ class SegmentedPageViewController<Page: SegmentedPageViewControllerPage>: UIView
     override func viewDidLoad() {
         super.viewDidLoad()
         
-        view.backgroundColor = .systemBackground
+        view.backgroundColor = .appBackground
         
         selectPage(initialPage, animated: false)
         

Tusker/Views/Asset Picker/AlbumTableViewCell.swift

@@ -21,6 +21,16 @@ class AlbumTableViewCell: UITableViewCell {
         thumbnailImageView.layer.cornerRadius = 0.05 * thumbnailImageView.bounds.width
     }
     
+    override func updateConfiguration(using state: UICellConfigurationState) {
+        var config = UIBackgroundConfiguration.listGroupedCell().updated(for: state)
+        if state.isHighlighted || state.isSelected {
+            config.backgroundColor = .appSelectedCellBackground
+        } else {
+            config.backgroundColor = .appBackground
+        }
+        backgroundConfiguration = config
+    }
+
     func updateUI(album: PHAssetCollection) {
         albumTitleLabel.text = album.localizedTitle
         

Tusker/Views/Asset Picker/AllPhotosTableViewCell.swift

@@ -34,4 +34,14 @@ class AllPhotosTableViewCell: UITableViewCell {
         }
     }
     
+    override func updateConfiguration(using state: UICellConfigurationState) {
+        var config = UIBackgroundConfiguration.listGroupedCell().updated(for: state)
+        if state.isHighlighted || state.isSelected {
+            config.backgroundColor = .appSelectedCellBackground
+        } else {
+            config.backgroundColor = .appBackground
+        }
+        backgroundConfiguration = config
+    }
+
 }

Tusker/Views/ContentTextView.swift

@@ -324,7 +324,7 @@ extension ContentTextView: UIContextMenuInteractionDelegate {
         // Create a dummy containerview for the snapshot view, since using a view with a CALayer mask and UIPreviewParameters(textLineRects:)
         // causes the mask to be ignored. See FB7832297
         let snapshotContainer = UIView(frame: snapshot.bounds)
-        snapshotContainer.backgroundColor = .systemBackground
+        snapshotContainer.backgroundColor = .appBackground
         snapshotContainer.addSubview(snapshot)
         
         let preview = UITargetedPreview(view: snapshotContainer, parameters: parameters, target: target)

Tusker/Views/Hashtag Cell/TrendingHashtagCollectionViewCell.swift

@@ -18,8 +18,6 @@ class TrendingHashtagCollectionViewCell: UICollectionViewCell {
     override init(frame: CGRect) {
         super.init(frame: frame)
         
-        backgroundColor = .systemBackground
-        
         hashtagLabel.font = .preferredFont(forTextStyle: .title2)
         hashtagLabel.adjustsFontForContentSizeCategory = true
         peopleTodayLabel.font = .preferredFont(forTextStyle: .caption1)
@@ -60,6 +58,16 @@ class TrendingHashtagCollectionViewCell: UICollectionViewCell {
         fatalError("init(coder:) has not been implemented")
     }
     
+    override func updateConfiguration(using state: UICellConfigurationState) {
+        var config = UIBackgroundConfiguration.listGroupedCell().updated(for: state)
+        if state.isHighlighted || state.isSelected {
+            config.backgroundColor = .appSelectedCellBackground
+        } else {
+            config.backgroundColor = .appGroupedCellBackground
+        }
+        backgroundConfiguration = config
+    }
+    
     func updateUI(hashtag: Hashtag) {
         hashtagLabel.text = "#\(hashtag.name)"
         historyView.setHistory(hashtag.history)

Tusker/Views/Instance Cell/InstanceTableViewCell.swift

@@ -39,6 +39,16 @@ class InstanceTableViewCell: UITableViewCell {
         descriptionTextView.adjustsFontForContentSizeCategory = true
     }
     
+    override func updateConfiguration(using state: UICellConfigurationState) {
+        var config = UIBackgroundConfiguration.listGroupedCell()
+        if state.isHighlighted || state.isSelected {
+            config.backgroundColor = .appSelectedCellBackground
+        } else {
+            config.backgroundColor = .appGroupedCellBackground
+        }
+        backgroundConfiguration = config
+    }
+    
     func updateUI(instance: InstanceSelector.Instance) {
         self.selectorInstance = instance
         self.instance = nil

Tusker/Views/LoadingTableViewCell.swift

@@ -14,6 +14,8 @@ class LoadingTableViewCell: UITableViewCell {
     override init(style: UITableViewCell.CellStyle, reuseIdentifier: String?) {
         super.init(style: style, reuseIdentifier: reuseIdentifier)
         
+        backgroundColor = .appBackground
+        
         indicator.translatesAutoresizingMaskIntoConstraints = false
         contentView.addSubview(indicator)
         NSLayoutConstraint.activate([

Tusker/Views/Notifications/ActionNotificationGroupTableViewCell.swift

@@ -48,6 +48,16 @@ class ActionNotificationGroupTableViewCell: UITableViewCell {
         NotificationCenter.default.addObserver(self, selector: #selector(updateUIForPreferences), name: .preferencesChanged, object: nil)
     }
     
+    override func updateConfiguration(using state: UICellConfigurationState) {
+        var config = UIBackgroundConfiguration.listPlainCell().updated(for: state)
+        if state.isHighlighted || state.isSelected {
+            config.backgroundColor = .appSelectedCellBackground
+        } else {
+            config.backgroundColor = .appBackground
+        }
+        backgroundConfiguration = config
+    }
+
     @objc func updateUIForPreferences() {
         for case let imageView as UIImageView in actionAvatarStackView.arrangedSubviews {
             imageView.layer.cornerRadius = Preferences.shared.avatarStyle.cornerRadius(for: imageView)

Tusker/Views/Notifications/FollowNotificationGroupTableViewCell.swift

@@ -43,6 +43,16 @@ class FollowNotificationGroupTableViewCell: UITableViewCell {
         NotificationCenter.default.addObserver(self, selector: #selector(updateUIForPreferences), name: .preferencesChanged, object: nil)
     }
     
+    override func updateConfiguration(using state: UICellConfigurationState) {
+        var config = UIBackgroundConfiguration.listPlainCell().updated(for: state)
+        if state.isHighlighted || state.isSelected {
+            config.backgroundColor = .appSelectedCellBackground
+        } else {
+            config.backgroundColor = .appBackground
+        }
+        backgroundConfiguration = config
+    }
+
     @objc func updateUIForPreferences() {
         for case let imageView as UIImageView in avatarStackView.arrangedSubviews {
             imageView.layer.cornerRadius = Preferences.shared.avatarStyle.cornerRadius(for: imageView)

Tusker/Views/Notifications/FollowRequestNotificationTableViewCell.swift

@@ -49,6 +49,16 @@ class FollowRequestNotificationTableViewCell: UITableViewCell {
         updateUIForPreferences()
     }
     
+    override func updateConfiguration(using state: UICellConfigurationState) {
+        var config = UIBackgroundConfiguration.listPlainCell().updated(for: state)
+        if state.isHighlighted || state.isSelected {
+            config.backgroundColor = .appSelectedCellBackground
+        } else {
+            config.backgroundColor = .appBackground
+        }
+        backgroundConfiguration = config
+    }
+
     @objc func updateUIForPreferences() {
         avatarImageView.layer.cornerRadius = Preferences.shared.avatarStyle.cornerRadiusFraction * 30
         

Tusker/Views/Notifications/PollFinishedTableViewCell.swift

@@ -38,6 +38,16 @@ class PollFinishedTableViewCell: UITableViewCell {
         displayNameLabel.adjustsFontForContentSizeCategory = true
     }
     
+    override func updateConfiguration(using state: UICellConfigurationState) {
+        var config = UIBackgroundConfiguration.listPlainCell().updated(for: state)
+        if state.isHighlighted || state.isSelected {
+            config.backgroundColor = .appSelectedCellBackground
+        } else {
+            config.backgroundColor = .appBackground
+        }
+        backgroundConfiguration = config
+    }
+
     func updateUI(notification: Pachyderm.Notification) {
         guard let statusID = notification.status?.id,
               let status = delegate?.apiController.persistentContainer.status(for: statusID),

Tusker/Views/Notifications/StatusUpdatedNotificationTableViewCell.swift

@@ -35,6 +35,16 @@ class StatusUpdatedNotificationTableViewCell: UITableViewCell {
         displayNameLabel.adjustsFontForContentSizeCategory = true
     }
     
+    override func updateConfiguration(using state: UICellConfigurationState) {
+        var config = UIBackgroundConfiguration.listPlainCell().updated(for: state)
+        if state.isHighlighted || state.isSelected {
+            config.backgroundColor = .appSelectedCellBackground
+        } else {
+            config.backgroundColor = .appBackground
+        }
+        backgroundConfiguration = config
+    }
+
     func updateUI(notification: Pachyderm.Notification) {
         guard notification.kind == .update,
               let status = notification.status else {

Tusker/Views/Profile Header/ProfileFieldsView.swift

@@ -14,6 +14,8 @@ class ProfileFieldsView: UIView {
     
     weak var delegate: ProfileHeaderViewDelegate?
     
+    private var fields = [Account.Field]()
+    
     private let stack = UIStackView()
     private var fieldViews: [(EmojiLabel, ProfileFieldValueView)] = []
     private var fieldConstraints: [NSLayoutConstraint] = []
@@ -62,9 +64,11 @@ class ProfileFieldsView: UIView {
     
     func updateUI(account: AccountMO) {
         isHidden = account.fields.isEmpty
-        guard !account.fields.isEmpty else {
+        guard !account.fields.isEmpty,
+              fields != account.fields else {
             return
         }
+        fields = account.fields
         
         for (name, value) in fieldViews {
             name.removeFromSuperview()
@@ -183,6 +187,7 @@ private class ProfileFieldValueView: UIView {
         super.init(frame: .zero)
         
         textView.isSelectable = false
+        textView.backgroundColor = .clear
         textView.defaultFont = .preferredFont(forTextStyle: .body)
         textView.monospaceFont = UIFontMetrics.default.scaledFont(for: .monospacedSystemFont(ofSize: 17, weight: .regular))
         textView.adjustsFontForContentSizeCategory = true
@@ -221,7 +226,6 @@ private class ProfileFieldValueView: UIView {
             textView.topAnchor.constraint(equalTo: topAnchor),
             textView.bottomAnchor.constraint(equalTo: bottomAnchor),
         ])
-        
     }
     
     required init?(coder: NSCoder) {

Tusker/Views/Profile Header/ProfileHeaderView.swift

@@ -61,6 +61,9 @@ class ProfileHeaderView: UIView {
     override func awakeFromNib() {
         super.awakeFromNib()
         
+        backgroundColor = .appBackground
+        
+        avatarContainerView.backgroundColor = .appBackground
         avatarContainerView.layer.masksToBounds = true
         avatarImageView.layer.masksToBounds = true
         avatarImageView.addGestureRecognizer(UITapGestureRecognizer(target: self, action: #selector(avatarPressed)))

Tusker/Views/Profile Header/ProfileHeaderView.xib

@@ -79,7 +79,6 @@
                         </textView>
                         <view contentMode="scaleToFill" translatesAutoresizingMaskIntoConstraints="NO" id="vKC-m1-Sbs" customClass="ProfileFieldsView" customModule="Tusker" customModuleProvider="target">
                             <rect key="frame" x="0.0" y="263.5" width="398" height="128"/>
-                            <color key="backgroundColor" systemColor="systemBackgroundColor"/>
                             <constraints>
                                 <constraint firstAttribute="height" constant="128" placeholder="YES" id="xbR-M6-H0I"/>
                             </constraints>

Tusker/Views/Status/ConversationMainStatusCollectionViewCell.swift

@@ -317,6 +317,12 @@ class ConversationMainStatusCollectionViewCell: UICollectionViewListCell, Status
         fatalError("init(coder:) has not been implemented")
     }
     
+    override func updateConfiguration(using state: UICellConfigurationState) {
+        var config = UIBackgroundConfiguration.listPlainCell().updated(for: state)
+        config.backgroundColor = .appBackground
+        backgroundConfiguration = config
+    }
+    
     // MARK: Configure UI
     
     func updateUI(statusID: String, state: CollapseState) {

Tusker/Views/Status/TimelineStatusCollectionViewCell.swift

@@ -351,6 +351,16 @@ class TimelineStatusCollectionViewCell: UICollectionViewListCell, StatusCollecti
         }
     }
     
+    override func updateConfiguration(using state: UICellConfigurationState) {
+        var config = UIBackgroundConfiguration.listPlainCell().updated(for: state)
+        if state.isHighlighted || state.isSelected {
+            config.backgroundColor = .appSelectedCellBackground
+        } else {
+            config.backgroundColor = .appBackground
+        }
+        backgroundConfiguration = config
+    }
+    
     // MARK: Accessibility
     
     override var isAccessibilityElement: Bool {

Tusker/Views/Status/TimelineStatusTableViewCell.swift

@@ -93,6 +93,16 @@ class TimelineStatusTableViewCell: BaseStatusTableViewCell {
         updateActionsVisibility()
     }
     
+    override func updateConfiguration(using state: UICellConfigurationState) {
+        var config = UIBackgroundConfiguration.listPlainCell().updated(for: state)
+        if state.isHighlighted || state.isSelected {
+            config.backgroundColor = .appSelectedCellBackground
+        } else {
+            config.backgroundColor = .appBackground
+        }
+        backgroundConfiguration = config
+    }
+    
     override func createObserversIfNecessary() {
         super.createObserversIfNecessary()
         

Tusker/Views/Status/TrendingStatusCollectionViewCell.swift

@@ -0,0 +1,21 @@
+//
+//  TrendingStatusCollectionViewCell.swift
+//  Tusker
+//
+//  Created by Shadowfacts on 2/2/23.
+//  Copyright © 2023 Shadowfacts. All rights reserved.
+//
+
+import UIKit
+
+class TrendingStatusCollectionViewCell: TimelineStatusCollectionViewCell {
+    override func updateConfiguration(using state: UICellConfigurationState) {
+        var config = UIBackgroundConfiguration.listGroupedCell().updated(for: state)
+        if state.isHighlighted || state.isSelected {
+            config.backgroundColor = .appSelectedCellBackground
+        } else {
+            config.backgroundColor = .appGroupedCellBackground
+        }
+        backgroundConfiguration = config
+    }
+}

Tusker/Views/TrendHistoryView.swift

@@ -16,7 +16,7 @@ class TrendHistoryView: UIView {
     private let curveRadius: CGFloat = 10
     
     /// The base background color used for the graph fill.
-    var effectiveBackgroundColor = UIColor.systemBackground
+    var effectiveBackgroundColor = UIColor.appBackground
     
     override func layoutSubviews() {
         super.layoutSubviews()