[gtk+] widget-factory: Enable alpha in the color button

[Matthias Clasen <matthiasc src gnome org>]

commit 76eed98b36f960c9daf92acf37225948d1f8d4b6
Author: Matthias Clasen <mclasen redhat com>
Date:   Sat Jun 28 11:12:23 2014 -0400

    widget-factory: Enable alpha in the color button
    
    This lets us verify that the theme treats the alpha scale fairly.

 demos/widget-factory/widget-factory.ui |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/demos/widget-factory/widget-factory.ui b/demos/widget-factory/widget-factory.ui
index b8b7528..efdaf30 100644
--- a/demos/widget-factory/widget-factory.ui
+++ b/demos/widget-factory/widget-factory.ui
@@ -808,6 +808,7 @@ Suspendisse feugiat quam quis dolor accumsan cursus. </property>
                             <property name="receives_default">True</property>
                             <property name="use_action_appearance">False</property>
                             <property name="rgba">#31316867a09f</property>
+                            <property name="use_alpha">True</property>
                           </object>
                           <packing>
                             <property name="expand">False</property>