[cogl] doc: Document CoglColor

[Damien Lespiau <dlespiau src gnome org>]

commit a0dfba1eb1c541490611a021799e656bf43a04fe
Author: Damien Lespiau <damien lespiau intel com>
Date:   Sun Dec 30 19:45:11 2012 +0000

    doc: Document CoglColor

 cogl/cogl-types.h |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)
---
diff --git a/cogl/cogl-types.h b/cogl/cogl-types.h
index 2de5bcd..83bdebf 100644
--- a/cogl/cogl-types.h
+++ b/cogl/cogl-types.h
@@ -361,6 +361,10 @@ typedef enum
 
 /**
  * CoglColor:
+ * @red: amount of red
+ * @green: amount of green
+ * @blue: amount of green
+ * @alpha: alpha
  *
  * A structure for holding a single color definition.
  *