Rooted or not?

 

You have to be rooted and deodexed. After that just make sure it is compatible with 2.2 which most of them are now. Personally I prefer this one and there are several colors of themes to choose from:

http://androidforums.com/droid-x-al...-custom-theme-experience-8-colors-choose.html

 

Droid X - All Things Root - Android Forums
Click there, grab a beer, and settle in for a good read...there's lots.

 

what about rooted and not deodexed

 

Then it's probably easier to create a backup in recovery, and install a rom. I'd recommend Apex.

 

[FONT=&quot]http://forum.xda-developers.com/showthread.php?t=874348 has links to some themes as well as a deodexer.[/FONT]