In the spirit of full disclosure, the Venn Diagram of “People Who Think Spangled and Be-Caped Polyester Jumpsuits Are a Good Idea” and “People from Whom Miss Plumcake Takes Sartorial Advice” does not see a great deal of overlapping. Still, as both Elvis and Carl Perkins –the artist responsible for writing the seminal rockabilly classic– know, there’s just something about a good pair of suede shoes. Blue is fine if a little expected, but greens from dusky olive to deep viridian are having a major moment this fall. Plus, green suede ages better blue does, where a bit of dirt…