Hi, I would like to change my window colour to #9B4F96 (RGB 155, 79, 150), but I haven't found a way to do it, I've had a little look through the registry with some hints from other sites but none seem to be the right one to change the Aero colour (they do help with the Windows Classic theme, but I can already change that with the Control Panel).

Any indication to the correct registry key on which to change it or another tool would be much appreciated!