Just remember the customizing requires more colors to look any good, and your computer will slow down as a result, and will use precious chip ram that could be used by apps.
The key to Cammy's customization is the pallette (Rebel's Palette?) which allows window borders and backdrops to look pretty good in 16 colors without slowing down too much.
Eitherway there is a fair bit of work in getting it to look good and function well. if you have the time go for it, but may I suggest you take a look at Classic workbench
http://classicwb.abime.net/classicweb/advsp.htm or amigasys:
http://www.amigasys.com/
