I saw there was only two themes on gravity falls, a Dipper one and a Mabel one. I felt good old Bill Cipher needs some love!
Image is from the gravity falls wiki
http://gravityfalls.wikia.com/wiki/Bill_Cipher
The image does not belong to me, it was featured in one frame at the end of the intro in season 1...
Though i did not make it myself i'd prefer if you did not take it and said you made it since well thats kind of not true but whatever.
