WinterBoard is a Cydia tweak for the jailabroken iPhone, iPod touch and iPad, which allows you to switch the iPhone’s theme that the appearance of the graphical interface, which includes the SpringBoard, Dock, and all the appearance of app icons. You can replace every graphic unlimited in the theme, but usually no one will be so hysterical – because that was a massive undertaking! But you can replace only the part to create an own visual style.
Now the WinterBoard update to version 0.9.3900-1 for iOS 5 by Saurik.
Download interBoard 0.9.3900-1 for iOS 5
Installed WinterBoard with Cydia or ifile, you can customize the theme for your iPhone. More themes you can get from Google Search.