Heres a themed background for your notification center. There are extra walls within the folder, each has three extra letters in the file name. Just delete the first three letters in the file name and change the one thats active (just add a letter or number). Theres a sunshine one, nyan, and hearts...i think thats it. Just look through them in the folder. The default one will be the leopard HK wall. For use in winterboard!
Download Notification Center Theme