Stephen Horlander over at Mozilla is doing great work on the visual appearance and functionality of future versions of Firefox. See his latest Windows Theme/UI Update.
Pixel nerds may remember Stephen from his significant contributions to Firefox 1.0 with the Winstripe and Pinstripe themes.

Comments
Jakub Steiner - December 22, 2009 8:58 pm
Both of which were a huge inspiration to the Tango project.
mobiel internet - January 2, 2010 3:49 pm
It might look better, but it creates an extra click each time you'd like to do something. I don't like it. What's wrong with the current situation?
iPhonekönig - January 10, 2010 6:58 pm
Thanks for this theme! Beta 2 looks really ugly on Windows Classic. I also installed the extension mentioned by Will to fix the Go button.
waldkraiburg - March 12, 2010 8:32 am
I like this new style for firefox, good job