Want to coat your favorite browser in Black Steel? The Black Steel theme for Firefox might not exactly be my cup of tea, however it does have a simplistic dark appeal that I am sure many will love. If your searching for a black theme, it is one of the best looking ones of the bunch too.
The entire theme is very sleek and polished feeling. One feature that it provides that many other dark themes are lacking is that it is still easy to read the menus and other text inside the browser too, without having to slowly inch your face towards your monitor.
You can pick up the Black Steel theme over on the Firefox Add-ons site.