Please remove the flag that limits usage of this theme to linux: it works also on windows and can be useful there (I hate the look firefox gets with aero on win7 and this theme was a great way to fix that).
First of all I'm lacking a win7 computer. So I'm not able to test the theme that easily. Second a friend has tested the theme and it doesn't look that fine. All buttons of the window manager where black (see http://i.minus.com/imMtNM2RrrzOS.png). Thus I'm sorry but I'm unable to enable my/mozillas theme for windows for now. But I'll gladly accept patches to fix that.
I've uploaded the theme for Firefox 13 beta at http://manuel.mausz.at/coding/ffwin/ and will add it as soon as version 12 has been approved (there's no way to approve multiple versions at the same time).
this is a really cool add-on! I like the buttons etc- but I had to disable due to it not working with my personas (maybe a couple extra button colors/persona integration and this would be super awesome!)