Well, Firefox (the browser only application) is very close to version 1.0! Get in on the fun.
My new fave theme is Noia (for Firefox).
My fave theme for Mozilla is still Mostly Crystal (works in Firefox too).

I still use Mozilla for both browsing and email only because I want to be able to middle click in my email and have the pages load as subsequent tabs in my brower in the background! SO COOL (yah, I need to get out more).
In the meantime... try Firefox! :-)