Looks really cool @njbrown!
However, I think on Safari, or at least on the Mac I'm using, the color picker is having issues. It only shows the hex color value, and if I try to edit the value it always changes the hex to 000000, which I believe is the black (or at least the material becomes black).

Other than that minor bug, everything else worked fine and it looks like it could be really useful, especially for those who do not have a workflow for making PBR materials setup. :smile: