I replaced my Cingular silver with a Roger's black case today, it wasn't too bad, I couldn't get to this site to see the detailed instructions as my wife was looking at a doll site and I couldn't wait I had to put it together 3 times before I got everything back in it, there are about a half dozen little pieces you have to keep track of, but it really wasn't bad.

I like the look of the black much better, strangely the keys feel better, it seems smaller, but I know it is just me