These theme files are compatible with the free iPhone program SBSettings. The unzipped theme folder should be installed in /User/Library/SBSettings/Themes/
All themes are retina compatible, but should work fine on earlier iPhones. Buttons for a toggle you have installed are not included? Let me know and I might add them.
Continuity is a dark theme with blue and white buttons. The flat buttons and the translucent black background are based on the black keyboard in iOS. Toggles include 3G, Airplane, AutoLock, Bluetooth, Brightness, Data, EDGE, Fast Notes, Location, Processes, SSH, Wi-Fi, DoNotDisturb, AutoCorrect, Push and PersonalHotspot.
Relative is a simple and clean theme with no unnecessary flash. The blue and white buttons, which are based on those found in iOS's slide-up dialogs, have big icons and are placed on a plain gray background, and that's about all there is to it. Toggles include 3G, Airplane, AutoLock, Bluetooth, Brightness, Data, EDGE, Fast Notes, Location, Processes, SSH and Wi-Fi.