If you miss the tweak ColorKeyboard in Cydia. Then you need to check out this new app/tweak that has hit the Cydia store. The app/tweak is Color Your Board.
What this does is lets you add some spice to your keyboard again. It lets you choose what color you would like to set your keyboard to. It has a few set colors, but if you want some other colors you can change it to that color as well. There is a free copy of this that has some limitations set in it. Or you can pay for the paid version. Witch I would suggest that you do. So check this out you won’t be disappointed.