So, I did a little more troubleshooting. I switched to a default WP theme and the selections started highlighting. I reenabled the Enfold theme and disabled all plugins. Still not working. I looked at the code and it appears that when the “selected” class is added it is not overwriting the “border-color” attribute of “.main_color .summary div”. Adding an “!important” callout on “.swatch-wrapper:hover” and “div.swatch-wrapper.selected” fixes it. Maybe not the most elegant, but it works.

https://drive.google.com/file/d/0B-zdekMjWAQnbHh6bHVVRDNiVEk/view?usp=sharing