diff --git a/azure_hl.rs b/azure_hl.rs
index ab2686f..27819fe 100644
--- a/azure_hl.rs
+++ b/azure_hl.rs
@@ -80,6 +80,7 @@ impl AsAzurePoint for Point2D<AzFloat> {
     }
 }
 
+#[deriving(Clone)]
 pub struct Color {
     r: AzFloat,
     g: AzFloat,