this is simply awesome! Rated 5 out of 5 stars

it not only looks great on main window, but (unlike most themes) doesn't break any of other windows
i can see only 3 small issues
tab elements outside of the tabbox are not styled
style for toolbarbutton[checked='true'] makes firebug toolbar too high
toolbarbuttons with type="menu" or "menubutton" look a bit strange

thank you for this great theme!

This review is for a previous version of the add-on (11).