Kosu, Skinner is an addon in and of itself. It changes a few visual aspects of the game, and it is very easy to use. No real configurations to play with, unless you *want* to. out of the box, it does the change in color/background/border for most openable windows/panels.
Unfortunately, the author has not decided to share his addon at WoWInterface, so you'll have to go to Curse to get it.
http://wow.curse.com/downloads/wow-a...s/skinner.aspx
Good luck with that, Kosu.