That dark plum with a metalflake can be done in powdercoat and it is stunning when the sun hits it. You can have it done with either a gold or silver metalflake. I had my wifes mixte done in a two step process and it came out really great. Hers is green with gold topcoat. Here is a shot of the frame only right after I got it back.
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(Life is too short to play crappy guitars) 2006 Raleigh Cadent 3.0, 1977 Schwinn Volare, 2010 Windsor tourist. ( I didn't fall , I attacked the floor)