Thebulb should be replaceable - never say one in a lighted grab handle that was not. But you can order a new one from Fleetwood Parts or a dealer.
Yes, you can prime and re-paiont the metal cover.
Former owner of 2004 American Tradition and several other RVs
Home is in the Ocala Nat'l Forest near Ocala, FL
Summers in Black Mountain, NC