diff --git a/TetrisUI/BundleHelper.swift b/TetrisUI/BundleHelper.swift
new file mode 100644
index 0000000..93ba7b5
--- /dev/null
+++ b/TetrisUI/BundleHelper.swift
@@ -0,0 +1,16 @@
+//
+//  BundleHelper.swift
+//  Tetris
+//
+//  Created by Shadowfacts on 10/17/19.
+//  Copyright © 2019 Shadowfacts. All rights reserved.
+//
+
+import Foundation
+
+fileprivate class BundleHelper {}
+extension Bundle {
+    static var tetrisUI: Bundle {
+        Bundle(for: BundleHelper.self)
+    }
+}
diff --git a/Tetris Mac/Assets.xcassets/Background.colorset/Contents.json b/TetrisUI/Media.xcassets/Background.colorset/Contents.json
similarity index 100%
rename from Tetris Mac/Assets.xcassets/Background.colorset/Contents.json
rename to TetrisUI/Media.xcassets/Background.colorset/Contents.json
diff --git a/TetrisUI/Media.xcassets/Contents.json b/TetrisUI/Media.xcassets/Contents.json
new file mode 100644
index 0000000..da4a164
--- /dev/null
+++ b/TetrisUI/Media.xcassets/Contents.json
@@ -0,0 +1,6 @@
+{
+  "info" : {
+    "version" : 1,
+    "author" : "xcode"
+  }
+}
\ No newline at end of file
diff --git a/TetrisUI/Media.xcassets/TetrominoAqua.colorset/Contents.json b/TetrisUI/Media.xcassets/TetrominoAqua.colorset/Contents.json
new file mode 100644
index 0000000..5358ebd
--- /dev/null
+++ b/TetrisUI/Media.xcassets/TetrominoAqua.colorset/Contents.json
@@ -0,0 +1,20 @@
+{
+  "info" : {
+    "version" : 1,
+    "author" : "xcode"
+  },
+  "colors" : [
+    {
+      "idiom" : "universal",
+      "color" : {
+        "color-space" : "srgb",
+        "components" : {
+          "red" : "0",
+          "alpha" : "1.000",
+          "blue" : "211",
+          "green" : "214"
+        }
+      }
+    }
+  ]
+}
\ No newline at end of file
diff --git a/TetrisUI/Media.xcassets/TetrominoBlue.colorset/Contents.json b/TetrisUI/Media.xcassets/TetrominoBlue.colorset/Contents.json
new file mode 100644
index 0000000..52854ef
--- /dev/null
+++ b/TetrisUI/Media.xcassets/TetrominoBlue.colorset/Contents.json
@@ -0,0 +1,20 @@
+{
+  "info" : {
+    "version" : 1,
+    "author" : "xcode"
+  },
+  "colors" : [
+    {
+      "idiom" : "universal",
+      "color" : {
+        "color-space" : "srgb",
+        "components" : {
+          "red" : "0",
+          "alpha" : "1.000",
+          "blue" : "214",
+          "green" : "79"
+        }
+      }
+    }
+  ]
+}
\ No newline at end of file
diff --git a/TetrisUI/Media.xcassets/TetrominoGreen.colorset/Contents.json b/TetrisUI/Media.xcassets/TetrominoGreen.colorset/Contents.json
new file mode 100644
index 0000000..8e7fb2d
--- /dev/null
+++ b/TetrisUI/Media.xcassets/TetrominoGreen.colorset/Contents.json
@@ -0,0 +1,20 @@
+{
+  "info" : {
+    "version" : 1,
+    "author" : "xcode"
+  },
+  "colors" : [
+    {
+      "idiom" : "universal",
+      "color" : {
+        "color-space" : "srgb",
+        "components" : {
+          "red" : "0",
+          "alpha" : "1.000",
+          "blue" : "71",
+          "green" : "214"
+        }
+      }
+    }
+  ]
+}
\ No newline at end of file
diff --git a/TetrisUI/Media.xcassets/TetrominoOrange.colorset/Contents.json b/TetrisUI/Media.xcassets/TetrominoOrange.colorset/Contents.json
new file mode 100644
index 0000000..95662fa
--- /dev/null
+++ b/TetrisUI/Media.xcassets/TetrominoOrange.colorset/Contents.json
@@ -0,0 +1,20 @@
+{
+  "info" : {
+    "version" : 1,
+    "author" : "xcode"
+  },
+  "colors" : [
+    {
+      "idiom" : "universal",
+      "color" : {
+        "color-space" : "srgb",
+        "components" : {
+          "red" : "255",
+          "alpha" : "1.000",
+          "blue" : "0",
+          "green" : "128"
+        }
+      }
+    }
+  ]
+}
\ No newline at end of file
diff --git a/TetrisUI/Media.xcassets/TetrominoPurple.colorset/Contents.json b/TetrisUI/Media.xcassets/TetrominoPurple.colorset/Contents.json
new file mode 100644
index 0000000..d8cd354
--- /dev/null
+++ b/TetrisUI/Media.xcassets/TetrominoPurple.colorset/Contents.json
@@ -0,0 +1,20 @@
+{
+  "info" : {
+    "version" : 1,
+    "author" : "xcode"
+  },
+  "colors" : [
+    {
+      "idiom" : "universal",
+      "color" : {
+        "color-space" : "srgb",
+        "components" : {
+          "red" : "168",
+          "alpha" : "1.000",
+          "blue" : "214",
+          "green" : "0"
+        }
+      }
+    }
+  ]
+}
\ No newline at end of file
diff --git a/TetrisUI/Media.xcassets/TetrominoRed.colorset/Contents.json b/TetrisUI/Media.xcassets/TetrominoRed.colorset/Contents.json
new file mode 100644
index 0000000..5714708
--- /dev/null
+++ b/TetrisUI/Media.xcassets/TetrominoRed.colorset/Contents.json
@@ -0,0 +1,20 @@
+{
+  "info" : {
+    "version" : 1,
+    "author" : "xcode"
+  },
+  "colors" : [
+    {
+      "idiom" : "universal",
+      "color" : {
+        "color-space" : "srgb",
+        "components" : {
+          "red" : "214",
+          "alpha" : "1.000",
+          "blue" : "61",
+          "green" : "0"
+        }
+      }
+    }
+  ]
+}
\ No newline at end of file
diff --git a/TetrisUI/Media.xcassets/TetrominoYellow.colorset/Contents.json b/TetrisUI/Media.xcassets/TetrominoYellow.colorset/Contents.json
new file mode 100644
index 0000000..4ac8cd1
--- /dev/null
+++ b/TetrisUI/Media.xcassets/TetrominoYellow.colorset/Contents.json
@@ -0,0 +1,20 @@
+{
+  "info" : {
+    "version" : 1,
+    "author" : "xcode"
+  },
+  "colors" : [
+    {
+      "idiom" : "universal",
+      "color" : {
+        "color-space" : "srgb",
+        "components" : {
+          "red" : "255",
+          "alpha" : "1.000",
+          "blue" : "71",
+          "green" : "229"
+        }
+      }
+    }
+  ]
+}
\ No newline at end of file
diff --git a/Tetris/Assets.xcassets/Background.colorset/Contents.json b/TetrisUI/Media.xcassets/TileBorder.colorset/Contents.json
similarity index 75%
rename from Tetris/Assets.xcassets/Background.colorset/Contents.json
rename to TetrisUI/Media.xcassets/TileBorder.colorset/Contents.json
index 021c433..40df838 100644
--- a/Tetris/Assets.xcassets/Background.colorset/Contents.json
+++ b/TetrisUI/Media.xcassets/TileBorder.colorset/Contents.json
@@ -9,10 +9,10 @@
       "color" : {
         "color-space" : "srgb",
         "components" : {
-          "red" : "0xDD",
+          "red" : "0.800",
           "alpha" : "1.000",
-          "blue" : "0xDD",
-          "green" : "0xDD"
+          "blue" : "0.800",
+          "green" : "0.800"
         }
       }
     },
@@ -27,10 +27,10 @@
       "color" : {
         "color-space" : "srgb",
         "components" : {
-          "red" : "0x22",
+          "red" : "0.157",
           "alpha" : "1.000",
-          "blue" : "0x22",
-          "green" : "0x22"
+          "blue" : "0.157",
+          "green" : "0.157"
         }
       }
     }
diff --git a/TetrisUI/Tetromino+Color.swift b/TetrisUI/Tetromino+Color.swift
index 8d5c09a..41b77a0 100644
--- a/TetrisUI/Tetromino+Color.swift
+++ b/TetrisUI/Tetromino+Color.swift
@@ -9,33 +9,23 @@
 import SwiftUI
 import TetrisKit
 
-fileprivate extension Color {
-    static let tetrominoAqua = Color(red: 0, green: 214/255, blue: 211/255)
-    static let tetrominoBlue = Color(red: 0, green: 79/255, blue: 214/255)
-    static let tetrominoOrange = Color(red: 255/255, green: 128/255, blue: 0)
-    static let tetrominoYellow = Color(red: 255/255, green: 229/255, blue: 0)
-    static let tetrominoGreen = Color(red: 0, green: 214/255, blue: 71/255)
-    static let tetrominoPurple = Color(red: 168/255, green: 0, blue: 214/255)
-    static let tetrominoRed = Color(red: 214/255, green: 0, blue: 61/255)
-}
-
 extension Tetromino {
     var color: Color {
         switch self {
         case .i:
-            return .tetrominoAqua
+            return Color("TetrominoAqua", bundle: .tetrisUI)
         case .o:
-            return .tetrominoYellow
+            return Color("TetrominoYellow", bundle: .tetrisUI)
         case .t:
-            return .tetrominoPurple
+            return Color("TetrominoPurple", bundle: .tetrisUI)
         case .j:
-            return .tetrominoOrange
+            return Color("TetrominoOrange", bundle: .tetrisUI)
         case .l:
-            return .tetrominoBlue
+            return Color("TetrominoBlue", bundle: .tetrisUI)
         case .s:
-            return .tetrominoRed
+            return Color("TetrominoRed", bundle: .tetrisUI)
         case .z:
-            return .tetrominoGreen
+            return Color("TetrominoGreen", bundle: .tetrisUI)
         }
     }
 }
diff --git a/TetrisUI/TilesView.swift b/TetrisUI/TilesView.swift
index 3f4edc8..34f850f 100644
--- a/TetrisUI/TilesView.swift
+++ b/TetrisUI/TilesView.swift
@@ -14,9 +14,16 @@ struct TilesView: View {
     
     var body: some View {
         GridView(rows: board.height, columns: board.width) { (col, row, size) in
-            Rectangle()
-                .frame(width: size, height: size)
-                .foregroundColor(self.board[col, row]?.color ?? Color("Background"))
+            if self.board[col, row] {
+                Rectangle()
+                    .frame(width: size, height: size)
+                    .foregroundColor(self.board[col, row]?.color ?? Color("Background", bundle: .tetrisUI))
+            } else {
+                Rectangle()
+                    .frame(width: size, height: size)
+                    .foregroundColor(Color("Background", bundle: .tetrisUI))
+                    .border(Color("TileBorder"), width: 1)
+            }
         }
     }
 }