I'm tossing aroung the idea of picking up a GPR kit to put together and get shooting this summer. I've seen threads on putting the kits together, and browning the metal. I was wondering if anyone ever put one together and left the metal in the white or aged to a gray patina. Thought it might look nice with that type of aged finish.Also can anyone tell me if the underib is steel? If the rib isnt, could this be finished to match the rest of the gun? Thanks for the help.