[RUDEBOY]

I have put a bodykity on my ride except for the rear bumper.The black rubber stuff on the bottom of the doors is an eye sore because my car is white.I want to know if there is a way to replace the black molding on both sides with a filler piece made of fiberglass.The body shop wont warranty the paint job because the piece is rubber? I want to know if anyone here had the same problem and what they did to paint and or replace the piece on all 4 doors? I need some help on this one and I have found the rear bumper but want to get the black moldings taken off but not have that HUGE GAP..........HELP THANKS I have the rod millen front lip and the erebuni side skirts on now.