Just had me a doodle and I'm thinking of using this as a window on the side panel of the case where the motherboard sits. Because of the almost unavoidable clutter that will be on the drive and PSU side, that panel is staying solid....
Black is metal, White is clear or tinted plexi (probably lightly tinted to keep it a little darker) and the grey would be frosted plexi to make it really glow....)
Thats 7 windows and this is seriously thick steel but if ya want what ya want you have to do the work lol