OEM Colors

Does anyone know the actual color names for the vintage bikes? Taco Purple or Bonanza blue just doesn't work when ordering powder. Is there a chart or listing? Thanks
I thought it was plumb crazy?
John Steen was using metallic purple well before Dodge's Plum Crazy. Plum Crazy (Plymouth called the same color In-Violet) was previously offered for only 2 years...1970 and 1971. Dodge brought the color back as an option on the new Challenger and Charger.

From what I remember, I don't think it's an exact match with Taco's purple, either.
The Tacos I have seen were not Plum Crazy, but maybe at one time they were. The Metallic Royal Purple is the closest to what I have seen. Thanks for everyone's help....