okay, as far as I know, it isn't possible to change any window decorations when you have desktop effects enabeled. Essentially, when you enable desktop effects, you change your window manager from metacity to compiz. Metacity is what draws the window frames, and Compiz is what gives the desktop the special effects, and uses it's own builtin window manager, completely removing metacity from the picture.
But I haven't seen any theme management systems for compiz yet. But then again I haven't looked.
Anyways, the easiest way to fix the problem would be to install BERYL which is another desktop effects system, which is imho, much better and has the same functionality.
hope that was helpful.
Last edited by darkscript; 30th November 2006 at 07:48 PM.
Reason: typo on the name beryl.