unfortunately this won't work for MM3 fully... for example the mainscreen is white.
one thing i noticed when i looked at your skin more closely (never noticed it before):
there are everywhere about 2px borders between the windows/scrollbars. BUT if you move the bar with the playing controls in the main window then there is only a 1px border. is this a bug by MM4 or did you just miss something?

here a screen what i mean:
