How to paint front lic. plate surround

[cebars]

Have the black OEM front license plate surround for my TR 04Z. Took it to the GM dealer and asked the body shop to paint it TR. I was told that they would not paint it as it was plastic. I think the real reason is that they didn't want to do a small PITA job. The whole body is "plastic". Bought a painted surround that was painted TR by KEWL but the edges were not sprayed and there was a dark line between parts of the front fascia and parts of the the surround. The vendor MAM took it back and returned my money. MAM was great to deal with. What products are available to prepare, prime, colour coat and clear coat the surround, if I was to do this myself. Anybody get their GM dealer paint the surround.