What's the diff besides the colors? Well, the Coco mat is made from 100% natural coir fiber and the Wal-Mart version...is, too. They are both 18"x30". Both have a non-slip backing. Soooo, it looks like aside from the aesthetics, they are pretty damn similar.
Except that, for an extra $15.02 + shipping, I don't have to support Wal-Mart. And that's enough for me!