diff --git a/src/color/mod.rs b/src/color/mod.rs
index efb2887..564bbe5 100644
--- a/src/color/mod.rs
+++ b/src/color/mod.rs
@@ -498,7 +498,7 @@ fn repr(red: &Number, green: &Number, blue: &Number, alpha: &Number) -> String {
 
     if alpha < &Number::one() {
         format!("rgba({}, {}, {}, {})", red_u8, green_u8, blue_u8, alpha)
-    } else if let Some(c) = NAMED_COLORS.get_by_rgba(&[red_u8, green_u8, blue_u8, 0xFF]) {
+    } else if let Some(c) = NAMED_COLORS.get_by_rgba([red_u8, green_u8, blue_u8, 0xFF]) {
         (*c).to_string()
     } else {
         format!("#{:0>2x}{:0>2x}{:0>2x}", red_u8, green_u8, blue_u8)
diff --git a/src/color/name.rs b/src/color/name.rs
index d613224..2461c33 100644
--- a/src/color/name.rs
+++ b/src/color/name.rs
@@ -26,8 +26,8 @@ impl NamedColorMap {
         self.name_to_rgba.get(name)
     }
 
-    pub fn get_by_rgba(&self, rgba: &[u8; 4]) -> Option<&&str> {
-        self.rgba_to_name.get(rgba)
+    pub fn get_by_rgba(&self, rgba: [u8; 4]) -> Option<&&str> {
+        self.rgba_to_name.get(&rgba)
     }
 }
 
diff --git a/src/value/number.rs b/src/value/number.rs
index 6843102..fd08b50 100644
--- a/src/value/number.rs
+++ b/src/value/number.rs
@@ -140,6 +140,7 @@ impl One for Number {
 
 impl Num for Number {
     type FromStrRadixErr = SassError;
+    #[cold]
     fn from_str_radix(_str: &str, _radix: u32) -> Result<Self, Self::FromStrRadixErr> {
         todo!()
     }
@@ -150,10 +151,12 @@ impl Signed for Number {
         self.abs()
     }
 
+    #[cold]
     fn abs_sub(&self, _: &Self) -> Self {
         todo!()
     }
 
+    #[cold]
     fn signum(&self) -> Self {
         if self.is_zero() {
             Self::zero()
@@ -236,7 +239,7 @@ impl Display for Number {
         let mut dec = String::with_capacity(if has_decimal { PRECISION + 1 } else { 0 });
         if has_decimal {
             for _ in 0..(PRECISION - 1) {
-                frac = frac * Self::from(10);
+                frac *= Self::from(10);
                 write!(dec, "{}", frac.to_integer())?;
                 frac = frac.fract();
                 if frac.is_zero() {
diff --git a/src/value/parse.rs b/src/value/parse.rs
index f87c781..df5da4b 100644
--- a/src/value/parse.rs
+++ b/src/value/parse.rs
@@ -669,7 +669,7 @@ impl Value {
 
                 let n = if val.dec_len == 0 {
                     if val.num.len() <= 18 && val.times_ten.is_empty() {
-                        let n = Rational64::new_raw(val.num.parse::<i64>().unwrap(), 1i64);
+                        let n = Rational64::new_raw(val.num.parse::<i64>().unwrap(), 1);
                         return Some(Ok(IntermediateValue::Value(
                             Value::Dimension(Number::new_machine(n), unit).span(span),
                         )));