LiveOS, an iPhone 4 theme, is designed by bluemetal. This theme is specifically designed with widgets in mind, creating a rather customizable design. The background contains an animated weather image with rain, clouds, snow, a moving sun and moon.
The theme includes a slick black UI, and Themed Apps such as Safari, Mail, Clock, Camera, Photos, Calendar, Notes, Settings, Ipod, iTunes, Maps, Compass, and the AppStore. Along with many other features. It comes in English, German and French languages.
Available in Cydia for $2.99