When you ordered it, how did you specify the color to the dealer?
In 1985, I was shopping for a new Chevy pick up in a shade of green. No greens were offered in the RPO list that year. My regular dealer said no problem, if I was able to wait for a special order. He brought out a large GM book, flipped open to a page of green paint chips and said pick the color you want. I made my choice and did have to wait for an extended time to get my truck. I happened to see my truck on the carrier going down the freeway being delivered to my dealer. It was a standout next to the other drab earth tones offered that year.
Remember this was in 1985, computerized ordering and such and I got what I wanted. I'm sure GM was much more flexible in 69.
I still have my green pickup by the way!