I couldn't figure out what the deal was with the non-matching stripes on the Regia Clown yarn. I mean, look at this:
Once I was 3/4 of the way through the second leg warmer, I figured out the problem:
While the colors repeat every four stripes, identical sets of four stripes take longer.
Luckily, I had four color repeats of every color (with cast on and cast off edges of a row or two), so the length of the leg warmers ended up matching.
In Master Hand Knitting Program news, I received a post card yesterday telling me they'd received my submission and had sent it to the judges.