Well, I have a huge container (former cheeseball container) full of leftover yarn. The pattern only calls for 4-5 colors (I believe) but I selected colors for contrast so each socks has a slightly different look but that was mostly because I had one color that I was too lazy to divide into two. ;)
This was such a great pattern to knit and I wanted to keep knitting to see everything emerge. I think I could have finished these a lot sooner if other stuff didn't get in the way.