So last night I was in the filesystem changing a bunch of graphics and then today I notice that my dialer looks like this:
But I didn't touch the dialer at all. It seems like more than a graphics problem anyway because touching the black part doesn't do anything.
EDIT: FIXED IT
Just in case somebody else ran into the same problem (but I doubt it, cause it was acting REALLY weird)...
I noticed that if I opened Winterboard and turned off my theme, the dialer was fine.
I then tried replacing my /Theme/MobilePhone.app folder with a fresh stock one and turning the theme back on, the problem reappeared. (Which makes no sense to me

)
I then just deleted my entire /Theme/MobilePhone.app folder. This solved the problem. In case I wanted to mod my dialer in the future, I copied over the fresh stock one again, and the problem was still solved.
So I'm not sure why I had to delete the folder to solve the problem, maybe these graphics are cached somewhere? I dunno, anyway, problem solved.