At least its not over glittery goldwash.
I've had good results w/ rust by using a well worn (not too abrasive) 3M scotchbrite pad, sprayed w/ Honda spray cleaner/polish. It seems to loosen rust well, and the cleaner/polish is gentle enough that with just a regular cloth or q-tip, its even safe for goldwash.

The pitting is what will may you decide about how to proceed. Etching or no pits. 'Can't make that call for you.