diff --git a/image/color/color.go b/image/color/color.go
index b24632b..d763713 100644
--- a/image/color/color.go
+++ b/image/color/color.go
@@ -7,3 +7,14 @@ func Transparent (c color.Color) bool {
 	_, _, _, a := c.RGBA()
 	return a != 0xFFFF
 }
+
+// ToRGBA converts any color to a color.RGBA value.
+func ToRGBA (c color.Color) color.RGBA {
+	r, g, b, a := c.RGBA()
+	return color.RGBA {
+		uint8(r >> 8),
+		uint8(g >> 8),
+		uint8(b >> 8),
+		uint8(a >> 8),
+	}
+}