I had my first non-ringnecks sold to me as "red goldens" turns out they were half and halfs. They are gone now but another thing to watch out for is if someone sells you a "rainbow pheasant" as it's just a polished sales gimmick for a hybrid bird.
As an aside to tell the amherst and golden birds apart amhersts have blue legs, a more reddish forehead, barring on the tail, and do not have a yellow beak or forehead like the golden birds. Just putting this out on this thread since we are talking about the two species and there are alot of...