I finished my Kanagawa Rainbow mittens a few weeks ago. I love how toasty warm stranded colorwork mittens are. These have seen quite a bit of wear already.
I used Cascade 220 Sport - a favorite yarn of mine for colorwork projects. I have a pretty big stash of this yarn, so what was intended to be a pair of mittens using 5 colors ended up with 11. If you want to know which colors I used I've got them all listed on the Raverly project page.