Are any of those colors correct?
All of the production parts were molded in color. The OE service parts were usually only offered in 1 or 2 colors after production ended and the leftovers were used up from production. As an example, the A pillars came in dark blue only when last available.
The materials used throughout the interior reacted to sun (UV) exposure in differnet ways over the years, and it's rare to find one today where the interior pieces are not multiple shades of the base color
IMO, best bet is to buy the best condition original pieces you can find, and refinish to whatever color you need....just as would have been done when the car was a few years old
I believe all the repros are made in black, and painted for the other choices...that was the case with the repro package tray ends I bought. Buyiing them already painted may or may not result in the "correct" color. The package tray I bought (in the color the vendor said was right) needed to be refinished to match the OE parts I had
Unfortunately. these are not 67-69 Camaros or 70-72 Chevelles. so the aftermarket isn't very interested in spenging the money to make them right, as many buyers are just happy to be able to buy something close since original stuff is very hard to source