I teach in an art/design school. The standard reference book for all (so called) theory courses is Itten’s color contrasts. Itten’s ghastly tome is full of mist

I teach in an art/design school. The standard reference book for all (so called) theory courses is Itten’s color contrasts. Itten’s ghastly tome is full of mistakes, vagaries and mumbo jumbo. In contrast, Bruce MacEvoy’s Handprint is my first point of reference for anything color related. It is also tragically under-recognized by designers. As a measure of the guy, he made his own watercolor color wheel, painstaking mixing each pigment by hand (around 60 pigments in all) and locating each one on the wheel.