I was originally going to make them out of some miscellaenous sock yarn. The pattern didn't show up in any of them. I pulled this Socks that Rock lightweight out of my 2008 Sock Club yarn. I've got four skeins of sock yarn on the way, so I'll replace this in my sock club with one of them.
The colorway is Grandma's Flower Garden. It's been very entertaining to see the way the colors are coming out.