I found the Petty Blue paint!

That is an incorrect name for it. B-3 was always "Basin Street Blue" on a '72-'73 Plymouth. B-3 was always "Blue Streak" on '72-'73 Dodges.
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You have to look under 1973 Dodge. 72 is debatable as to what they called it. Same color
A friend had a 72 Demon, and we called it Super Blue.
Another guy had a Scamp that color, still called it Super Blue.
I don’t think Chrysler referenced it as Petty Blue?

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