That is a great little collection of info so far. A colour picker Wiki page for PBR values (with a gamma and linear rgb readout would be nice ) would also be cool so people can just put up values and we can get a big library perhaps? Maybe even a little calculator in the page also to take various inputs and give outputs. Ie, IOR in, and perp reflectance out, as a 0...1 range float, or rgb linear, or rgb gamma. Or any other combination of the above and it fills in the missing fields.