I love little behind-the-scenes bits of ephemera, and this DC Comics color guide from 1982 may be one of my favorite things. Part of the reason these character and costume designs are so iconic is because they are (or were) consistent, and that helps make them instantly recognizable. (The artwork doesn’t hurt either. It’s hard to tell at that size, but is that José Luis Garcia-López’s work, praised be his name?)
I think it speaks well of Plastic Man as a character that, in a group of fairly static poses, the wise-acre is still managing to get into some mischief!