mb6582 just has an ordinary rectangle piece of acrylic glued to the underside of the panel.. mine has, atleast :) i didn't see anyone making 'custom' ones?? Maybe i missed this, but i can guarantee that an ordinary (maybe smoke-tinted) piece glued to the underside looks very very nice. You can see a photo of mine here! Funky display colors is cause by the camera angle, and you can see that the inside edge is aluminum-color, though Wilba suggested in the build instructions to paint it black with a sharpie or something - yeah, i'm a rebel :geek:
Now, if i could just remember the thickness.... well, it can be found in the build instructions too :tongue: