On those wheels u don't run center caps, the center caps don't look that great on those wheels either. Nice wheels, le-37 i am guessing

 

Yep, LE-37s. That rust looks like it is on the rotors right? Maybe I'll just replace them.

Was hoping they would have some basic center caps, which they do, but I can't find those, and all the ones I found are those big hexagonal ones and I'm thinking they won't really look that great.

 

agreed, but i wouldn't change the rotors i would mabye take off the wheels and use a wire brush to get the rust off, and maybe spray it a flat black (very light coat), but what u are seeing is more of the axel bolt, not the rotor