diff --git a/src/color/hsv.rs b/src/color/hsv.rs
index c67d706..b4b8bbc 100644
--- a/src/color/hsv.rs
+++ b/src/color/hsv.rs
@@ -35,6 +35,20 @@ pub trait ToHSV {
     pub fn to_hsv<U:Channel + Float>(&self) -> HSV<U>;
 }
 
+impl ToHSV for u32 {
+    #[inline]
+    pub fn to_hsv<U:Channel + Float>(&self) -> HSV<U> {
+        fail!("Not yet implemented")
+    }
+}
+
+impl ToHSV for u64 {
+    #[inline]
+    pub fn to_hsv<U:Channel + Float>(&self) -> HSV<U> {
+        fail!("Not yet implemented")
+    }
+}
+
 impl<T:Clone + Channel + Float> ToHSV for HSV<T> {
     #[inline]
     pub fn to_hsv<U:Channel + Float>(&self) -> HSV<U> {
@@ -105,6 +119,20 @@ pub trait ToHSVA {
     pub fn to_hsva<U:Channel + Float>(&self) -> HSVA<U>;
 }
 
+impl ToHSVA for u32 {
+    #[inline]
+    pub fn to_hsva<U:Channel + Float>(&self) -> HSVA<U> {
+        fail!("Not yet implemented")
+    }
+}
+
+impl ToHSVA for u64 {
+    #[inline]
+    pub fn to_hsva<U:Channel + Float>(&self) -> HSVA<U> {
+        fail!("Not yet implemented")
+    }
+}
+
 impl<C: ToHSV, T:Clone + Channel + Float> ToHSVA for (C, T) {
     #[inline]
     pub fn to_hsva<U:Channel + Float>(&self) -> HSVA<U> {
diff --git a/src/color/rgb.rs b/src/color/rgb.rs
index e3662cd..dcb4041 100644
--- a/src/color/rgb.rs
+++ b/src/color/rgb.rs
@@ -36,6 +36,13 @@ pub trait ToRGB {
     pub fn to_rgb<U:Channel>(&self) -> RGB<U>;
 }
 
+impl ToRGB for u32 {
+    #[inline]
+    pub fn to_rgb<U:Channel>(&self) -> RGB<U> {
+        fail!("Not yet implemented")
+    }
+}
+
 impl ToRGB for u64 {
     #[inline]
     pub fn to_rgb<U:Channel>(&self) -> RGB<U> {
@@ -110,6 +117,20 @@ pub trait ToRGBA {
     pub fn to_rgba<U:Channel>(&self) -> RGBA<U>;
 }
 
+impl ToRGBA for u32 {
+    #[inline]
+    pub fn to_rgba<U:Channel>(&self) -> RGBA<U> {
+        fail!("Not yet implemented")
+    }
+}
+
+impl ToRGBA for u64 {
+    #[inline]
+    pub fn to_rgba<U:Channel>(&self) -> RGBA<U> {
+        fail!("Not yet implemented")
+    }
+}
+
 impl<C: ToRGB, T:Clone + Channel> ToRGBA for (C, T) {
     #[inline]
     pub fn to_rgba<U:Channel>(&self) -> RGBA<U> {
@@ -121,6 +142,16 @@ impl<C: ToRGB, T:Clone + Channel> ToRGBA for (C, T) {
     }
 }
 
+impl<T:Clone + Channel> ToRGBA for RGBA<T> {
+    #[inline]
+    pub fn to_rgba<U:Channel>(&self) -> RGBA<U> {
+        RGBA::new((*self).r.to_channel(),
+                  (*self).g.to_channel(),
+                  (*self).b.to_channel(),
+                  (*self).a.to_channel())
+    }
+}
+
 impl<T:Clone + Channel> ToHSVA for RGBA<T> {
     #[inline]
     pub fn to_hsva<U:Channel + Float>(&self) -> HSVA<U> {