diff --git a/ChangeLog b/ChangeLog
index c3d7fd820..80a470de8 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,12 @@
+2010-01-23 Eric Wasylishen <ewasylishen@gmail.com>
+
+	* Source/GSWindowDecorationView.m: In drawRect:, clear the window
+	background before getting the theme to draw its background.
+	This makes windows with semitransparent background colors work
+	properly.
+	NOTE: While the clear operation is very fast, we may want to only do
+	it if the window background colour has an alpha value of < 1.
+
 2010-01-23 Eric Wasylishen <ewasylishen@gmail.com>
 
 	* Source/NSMenuView.m: For horizontal menus, treat clicking in the
diff --git a/Source/GSWindowDecorationView.m b/Source/GSWindowDecorationView.m
index c795e78e2..8030d26c0 100644
--- a/Source/GSWindowDecorationView.m
+++ b/Source/GSWindowDecorationView.m
@@ -355,6 +355,9 @@
 {
   if (NSIntersectsRect(rect, contentRect))
     {
+      // Since this is the outermost view, we have to clear the contentRect
+      // in case the theme's window background is not opaque.
+      NSRectFillUsingOperation(contentRect, NSCompositeClear);  
       [[GSTheme theme] drawWindowBackground: contentRect view: self];
     }
 }