Oddly green pink-edged sulphur

This picture was less taken to memorialize a fairly common butterfly than it was as a test of the new old 200mm AI-s Micro-Nikkor that I got in hope of . . . well, something. So while walking to lunch I took a few pictures, and it was either this or Japanese beetles reproducing, and we've seen quite enough of that. This one is a Colias interior.