Yeah, I've always wanted to use that color changing paint on a phone, and the Diamond was perfect since practically its whole body slides off as the battery cover. It makes it very easy to do custom paint jobs!
Glad y'all like it. I find myself walking around outside just looking at the back of it change colors in the light. So many different shades too! :)
Dave Parker MVP:
That's way cool. I wish my Touch had the angled back now...... 
Did you do it yourself Adam or get it done professionally?
Biomehanika:
I had tried to do it myself, but paint doesn't stick very well to the shiny plastic of the original Diamond, so I just went to the local autobody shop and they did it flawlessly. I'm sure any autobody shop would be able to do it. Just slide the battery cover off, tape up the camera hole, and they can do anything. It's easier if you bring your own paint too.