Here is a feat only a Firefox add-on theme can achieve. Now just by installing a theme you can make your Firefox look like other browsers ! Now I fail to reason why would one want to do that, if you get it let me know ! Anyhoo,
1) Make your Firefox Look like Internet Explorer 6
Just as expected same old Internet explorer 6 with tabbed browsing !
Here is how it looks:-
Get it now
2) Make your Firefox Look Like Internet Explorer 7
This one truly awesome, it totally replicates the essence of IE7 and feels damn good too !
3) Make your Firefox Look Like Safari
Now I was impressed with this one, the striking resemblance between the two. Even the buttons and Scroll bar looks amazingly similar.
Do check out our hack on how to Install Firefox addon for Multiple Users in Windows