We did a review on the keyboard app Blink some time ago. We stated that Blink could become one of those staple apps from the AppStore. And with this last update it could have done just that.
Blink now has a built in theme maker application. It lets you change a lot of features for your keyboards like adding a background, and keyboard size. It even goes as far as letting you change the color of your keys.
So get to the App Store and get your copy of Blink today.