Make element.style["color"] work in Sky

sky/engine/core/animation/Timing.idl

Index: sky/engine/core/animation/Timing.idl
diff --git a/sky/engine/core/animation/Timing.idl b/sky/engine/core/animation/Timing.idl
index 1f0b84da0a277d7aec4b66bb3b6f532ee573bdd7..ff14989aa4b0177b98def9e9f9008615a0ebb044 100644
--- a/sky/engine/core/animation/Timing.idl
+++ b/sky/engine/core/animation/Timing.idl
@@ -14,12 +14,12 @@
     // FIXME: This uses a NamedPropertyGetter to implement the 'duration' attribute
     // because duration has a union type (which is tricky to do with an attribute).
     // Fix will be in a follow-up patch if there is a better solution.
-    [NotEnumerable, ImplementedAs=getDuration] getter (double or DOMString) (DOMString name);
+    [ImplementedAs=getDuration] getter DOMString (DOMString name);
 
     // FIXME: If the user calls animation.specified.duration = "" (empty string) then duration
     // gets set to 0 (This is correct behavior for IDL). Correct result is for duration to
     // be set to 'auto'.
-    [TypeChecking=Interface, ImplementedAs=setDuration] setter double (DOMString name, double duration);
+    // [TypeChecking=Interface, ImplementedAs=setDuration] setter double (DOMString name, double duration);
 
     attribute double playbackRate;
     attribute DOMString direction;