I love something like this classic stripe in the 2008 HGTV Dream Home via The Inspired Room and also the very sophisticated bathroom from Young House Love, but I'm thinking something a little more fun for the craft area - maybe varied width stripes. Plus, that's a better way to use more than two colors, which I kinda need to do because I'm using paint leftovers of varying amounts.
So I did a quick Google Image search for striped walls and picked out a few inspirations for multicolor/varied widths:Don't like the colors, but I like the pattern idea
(from This Old House, complete with tutorial).
I like this - fixed width, but three colors (source).