So not too long ago I upgraded my front brakes to the NQSBBK off a boxter. The kit allows you use stock rotors but the pads will only sweep about 80% of the surface, leaving a slight ring where the pad doesn't make contact. I knew to expect this but now that rust is forming on the un-swept part, its becoming more and more noticeable. So my question is can I cover this up with caliper paint after cleaning the rust off? Are there any other solutions?