When it comes to themes for Firefox, you should know by now that I like them to be easy on the eyes and I like for them to be simple. When you mix those two needs together, you can for sure get the Industrial Firefox theme. This will give your browser a slick new look and you will love what you see.
Icons from the Tango Desktop Project. It is a variant of the “Tango” theme for use with Novell’s Industrial look, see more details there.
Looks pretty good to me, but don’t take my word for it – try it out for yourself.