Let's Get Textural
You have to be careful when choosing textural designs for self-striping sock yarns. Some will highlight the color changes while others will be overwhelmed. Here are two I think work nicely.
For knitting, the high-relief structure of the Circle Socks provides the perfect backdrop for fun color changes.
For crochet, we have the Vee Socks for Me Socks, which have a nice, all-over texture.
Here are some pictures of other projects on Ravelry where you can see how they look with striping yarn.