I'm a full-size keyboard user as well. It is extremely rare that any enthusiast here will consider designing/offering a full-size custom case, especially in aluminum. This is because a) they are wicked expensive to make, b) virtually nobody in the DIY crowd uses full-size boards.
The Peach was a rare specimen and it wasn't offered in white, so I skipped it. Chances are nobody will do one again for a very long time, and even if they do, they probably won't offer white as a color (because powder-coating is more effort than they are willing to go to).