The '72 is a FANTASTIC looking car, actually both of them are. But then I'm partial to Porsche's metallic Blues on a coupe, as anyone who has seen my previous posts will know.
I can tell you the paint code and what year(s) it was available for any metallic Blue from '65 to early '90s.
I would like to see the '73 if possible, I'm in L.A. I'll send you another message.