[Schonyenko2]

I agree with Kurt although in the case of vehivles like bright green rail road trucks that may, or may not have special equipment for rolling down tracks, or cab area, the color was part of an overall order package.
Cars like 69 hugger orange Novas were -- special paint. My one source shows that Stratomist blue poly in a buick code 26 2213 show it also as Mulsannia blue poly on the Chev side. Shows it to be a * Corvette color, or a ** Riviera color.
I don't have access to my dupont book right now, but I think that's the laquer mixing code on the TT. Interesting how they did that, and not sure why. Reminds me of the MM magic mirror code.