Here a patch to enable window matching in decoration plugin: http://hibbert.univ-lille3.fr/~cbellegarde/Compiz/decor_match.patch And a shema file if you want to test: http://hibbert.univ-lille3.fr/~cbellegarde/Compiz/decor.schema For removing shadow on panels, just add "type=dock" to no_border_match Cedric