Here is link on how to color mod the finder

[nec207]

Here is link on how to color mod the finder for people who do not like the mono gray look.

Color mod iTunes.
http://www.youtube.com/watch?v=Msy7FwfQ-Sw


Color mod the gray finder sidebar ( some people this mod does not work)

http://www.macupdate.com/app/mac/40989/colorfulsidebar
http://www.macupdate.com/app/mac/43078/sideeffects


Note read the comments on in the link .

Very easy to do even novice users.

 

[GGJstudios]

You may find some additional useful information in some of the existing threads on this:

Finder color change
Sidebar Colors
Change Lion Finder Sidebar icons to color version?