Hi Jim, for the '03 Onyx w/Indigo Flames (factory codes #5PX7 #5PX8) the tins are painted with Yamaha Black paint color number 0033 and Colorrite.com 5135. Yamaha failed to document the Indigo. I think it might be a decal under there. But if its paint then I think its likely the '02 Indigo color: Dark Violet Metallic A (DVMA) paint color number 0778 and Colorrite.com 5996 over a base coat of 1996. This info comes from the 02 and 03 Yamaha Technical Bulletins covering paint colors, parts manuals and the Yamaha/Star parts website, and colorrite. None of those places speak to the Indigo color. Again, it could be a decal under there.
I've been after this for awhile and you are the first person to ask in years. Sorry I don't have the perfect answer.
[Added} See also:
http://www.rswarrior.com/forums/13-t...odel-year.html