I am in the process of building a HIC and was thinking about how I could make it appear to float against my wall. Well I did some research on lighting techniques and found a fairly inexpensive way to back-light it on my wall.
Check these out (I found them on Evil Bay!)
20M 15M 10M 5M LED RGB Color Change Strip Light Kit Flexible Dimmable Waterproof | eBay
I bought a set and these things are incredibly bright, remote controlled, and self adhering! They are RGB so you can change the color to suit your mood by remote!! I was so impressed with these, I figured I would share the find. I plan on simply sticking them to the outer corners on the back of my HIC, setting it on some clear acrylic blocks, and anchoring it to the wall to keep it from falling forward.
Good luck with your builds.