I had a '69 Firebird that I bought from the family of the original owner. It was a code 59 Limelight (Frost) Green car with a black vinyl top and dk green interior. It had 14x7 steel wheels (not XT, but the Pontiac identical equivalent) with dog dishes. They were painted black and I couldn't find any evidence that they were ever painted Green.
That was also the car I spoke of before, where I found out that you got a TH400 with the 350-2V IF you also ordered A/C. Whenever I think I've got it all figured out, I usually find an original weird car that tells me there's always exceptions to the hard "rules" in my head.