Description: Fix 'Show Desktop' button transparency when using a
		'transparent' background.

Bug: https://bugs.launchpad.net/light-themes/+bug/923788

=================================================
--- light-themes-0.1.8.25.orig/Radiance/gtk-3.0/apps/gnome-panel.css	2011-09-20 12:02:50.000000000 -0400
+++ light-themes-0.1.8.25/Radiance/gtk-3.0/apps/gnome-panel.css	2012-01-30 10:23:54.389856908 -0500
@@ -79,3 +84,27 @@
 WnckPager, WnckTasklist {
     background-color: @dark_bg_color;
 }
+
+#showdesktop-button {
+	background-image: none;
+	background-color: @transparent;
+}
+
+#showdesktop-button:prelight {
+	background-image: none;
+	background-color: alpha (#ffffff, 0.65);
+}
+
+#showdesktop-button:prelight:active,
+#showdesktop-button:active {
+	background-image: none;
+	background-color: alpha (shade (@dark_bg_color, 0.4), 0.5);
+
+	-unico-border-gradient: -gtk-gradient (linear, left top, left bottom,
+                                           from (alpha (shade (@button_bg_color, 0.6), 0.5)),
+                                           to   (alpha (shade (@button_bg_color, 0.7), 0.5)));
+	-unico-inner-stroke-gradient: -gtk-gradient (linear, left top, left bottom,
+                                                 from (alpha (shade (@button_bg_color, 0.84), 0.5)),
+                                                 to   (alpha (shade (@button_bg_color, 0.9), 0.5)));
+	-unico-inner-stroke-width: 1;
+}