The u'v' chromaticity diagram has been the recommended tool since 1976, 45 years ago, long before any diagram you will see on the web was created. The “color o

The u'v' chromaticity diagram has been the recommended tool since 1976, 45 years ago, long before any diagram you will see on the web was created. The “color of the universe” brouhaha is amusing, but trying to assign a color to the universe is somewhat nonsensical, and the result is not really meaningful to laypeople.