Gallery Slideshow Caption Color

Ok, at the bottom of the main slide show on home page, where each slide is named, I believe it is the "caption" it is a dark black horizontal line. I want to change that color. I have looked high and low in all the style sheets but cannot find where to do this or what it would be called. Can someone tell me where to edit that color? Here is the site: http://designcorral.com/

Thanks!