My Platinum theme was released a while back, and is a dark theme for Mozilla Firefox. Many people don't like it, but later reviews were more favourable, if few and far between since the theme dropped off the front page of addons.mozilla.org.

It's available on the Mozilla Addons site, but is no longer supported or developed, as I've decided it's not worth the effort to maintain it for the latest versions of Firefox: I'm just not cut out to be an artiste. It'll work up to Firefox 2.0.