Thank you for the quick response!
So it is not possible, then, for me to make it so that these DIV elements display as a background the images over a solid background color? (Similar to the default "loading.png" background in js-image-slider.css for Demo 7: "background:#fff url(/images/loading.png) no-repeat 50% 50%;")
If not, it's only a minor inconvenience. Thanks again for the reply.