Here is a retro theme for you, make Firefox go back in time to the Netscape era:
Foxscape is a full featured retro theme for Firefox based on Netscape Communicator 4.8 on Windows. To be honest, I never did use the old Netscape very much. Never did like the look of it. You know what? Now I can not like the look of it again!
I am sure this theme will tug on the classic heart strings of somebody out there. If your missing the first generation of the browser wars, and you want to relive being the loser – give Foxscape a shot.