Very dark tabs in Firefox 4

Question

Browsers

Why are tabs so dark in Firefox4? I didn't see it in the screenshots. Tabs are dark on any theme. The computer is running Windows 7 with Aero disabled. How can I change the transparency of the tabs or their color? PS: I looked at the manual on the forum for changing Userchrome.css, but it seems to be relevant only for FF 3.

Answer 1

Maybe because Personas is enabled?

Answer 2

Have you tried creating a new profile ?
- What happens if you enable Aero (or is it technically impossible)?
Is Firefox the only app with this problem?
- Was it with all versions or just the release? Have you tried installing the old one?