A major part of this whole episode is the premise that Matlock is allergic to any kind of suit except the pale gray suits he wears every day. No charcoal gray, no navy blue--nothing. My wife and I jokingly say "They had a short script that week"--so they added the ridiculously nonsensical "allergic to dark suits" scenes. Terrible writing, insulting to viewers, and unprofessional to the max.
I like Matlock, generally, but the creation of Matlock's "dumb hick" character is a major flaw., and the show succeeded only b/c of Andy Griffith's popularity. The Southern-cracker man-boy who just happens to be a genius in the courtroom is unfortunate, to say the least.