Compatible with iOS 4, 5 and 6
Compatible only with iPad
Colorize keyboard on you iPad.
Now, you can change colors of key buttons or add background image.
Includes support for keyboards in iPhone-mode apps (classic apps)
Launch setting app > Tap "Color Keyboard" > Tap "Select Themes" > ( Select theme which you want. ) > Tap back button > Tap "Save" button which is placed at top right corner.
Read here to make your own theme
Themes folder is /Library/ColorKeyboard/Themes/
No new icons are added to your homescreen. You can configure options from your Settings app.
See larger Screenshots below