Jailbreak: WinterBoard

Jailbreak: WinterBoard

If you've ever seen some guy on the internet proudly demonstrating his garishly skinned or themed iPhone, this is almost definitely what he was using. Note: It can be used for aesthetic good as well as evil.

LINK

Free

From the App Developers: Give your iPhone or iPod Touch a graphical overhaul! WinterBoard provides hooks that let graphics artists safely and simply theme almost anything in Apple's OS.