wp23n you are exactly right. Look at Richard Pettys vintage race cars and you can see the real Petty blue. That's where it got its name. It had no metalflake to it at all. Chrysler used that color in the early 70's on several models. I'm like you, I don't know why they said that 43rd produced Challenger was Petty Blue. I haven't seen it in person but the pictures don't look like Petty Blue. I'm no expert but B-5 blue was one of the most popular and common color of the musclecar years. Petty bue was rarely seen on anything but Dusters and Challengers, at least around here.