Adwaita GTK3 on F18 no longer honors bgcolor

[Gordon Messmer]

Under Fedora 17, I was able to select an alternate background color for 
GTK2 and GTK3.  Under F18, only the GTK2 applications honor the setting. 
  Before I file a a bug, does anyone know if this behavior was an 
expected change?

$ dconf dump /org/gnome/desktop/interface/
[/]
gtk-color-scheme='selected_bg_color:#493f53;'

$ cat .gconf/desktop/gnome/interface/%gconf.xml
<?xml version="1.0"?>
<gconf>
         <entry name="gtk_color_scheme" mtime="1358361695" type="string">
                 <stringvalue>selected_bg_color:#493f53;</stringvalue>
         </entry>
</gconf>