Here is another theme ready for Firefox 2! Planet Mir looks more like the traditional Firefox 1.5 theme, but it has a few new quirks and styles that makes it fit in perfectly with the new Firefox 2 features. If the goal of the theme was to go for a cleaner, crisper looking theme than the default theme for Firefox – I think they did it.
Update! Looks like I goofed, because Planet Mir isn’t exactly ready for Firefox 2 just yet. Hopefully it will be soon though, because it is a great minimalistic theme!