'Bloard' Enables the Black Keyboard in iOS 7 for All Interfaces, All the Time
Depending on the interface that you have open in iOS 7, your keyboard might be white, or it might be black. Most of the time, your keyboard is white, but the black keyboard is just so much sexier. With that being said, why not enable it everywhere?
That's exactly what a new free jailbreak tweak dubbed Bloard
by iOS development team GN-OS does. With this tweak installed, you'll get the black iOS 7 keyboard in every typing interface, rather than the white iOS 7 keyboard.
For some, the black keyboard is easier on the eyes than the white one, so this might be a useful tweak for those that are hard at seeing. It's especially easier on the eyes in the dark.
If at any time you want to go back to the white keyboard temporarily, all you need to do is visit the tweak's preferences pane in the Settings application and disable the tweak via the killswitch:
To grab Bloard, you can head over to Cydia's BigBoss repository right now.