Well after considering the options above, I think I'm going to dump still more money towards the fine folks at MameMarquees.com. I've used them before for marquees and CP overlays but didn't realize they did Bezels until just now... Seems far classier (and less destructive) than just painting the back of the glass black.
this from them:
Q. What are your bezel printed on?
A. The Bezels are printed on tough polypropylene (banner material) and then laminated with a luster laminate. It is made to be sandwiched between plexi, or mounted behind the glass using posterboard behind it to support it. If requested, we can also print them on Adhesive vinyl to be mounted to the front of the glass. All Bezels are shipped with the center intact and need to be cut out. We have had issues with bezel damaging in shipment if the center is cut out.