Seems the Chebby guy was correct. Azure Turquoise is a real color. Here is a link to a 69 Camaro for sale, that happens to be Azure Turquoise. Very nice color! Often the different GM divisions used some of the same colors, they just called them different things. I owned a 67 Plum Mist GTO, and I know some Camaros were painted the same color-except Chevy called it Royal Plum.
http://camaromuscle.com/INDEX9.htm