I just OTA downloaded and installed one of the nicest themes I've seen for my BB 8330 from "Blackberrythemes.net" called "Droid"--. It cost $7 but it was worth it in that it finally gave me the "Android" styled phone I was looking for. I wanted a Google Android phone and complained that my carrier didn't have it.
The theme looks so much like an Android phone that I am now completely satisfied with my BB 8330.
