I was thinking more along the lines of the Salamander line of furniture. Perforated metal with a powder coat. From a distance it looks solid black.
Industrial supply places sell the stuff unfinished for sorting (use the screens to allow small stuff through then move on to bigger holes), but nothing like what I need. I don't have the tools to powder coat it properly.
Here's an example (the door) of what I'm looking for:
http://www.audioadvisor.com/prodinfo.asp?number=SMKSU30