diff --git a/src/style/Color.js b/src/style/Color.js
index 2c47bd86..6d420371 100644
--- a/src/style/Color.js
+++ b/src/style/Color.js
@@ -717,6 +717,7 @@ var Color = Base.extend(new function() {
 		 *
 		 * @type Number
 		 * @bean
+		 * @default 1
 		 *
 		 * @example {@paperscript}
 		 * // A filled path with a half transparent stroke: