But it isn't that simple, isn't it - what about the Helmholtz–Kohlrausch effect, most pronounced in spectral lights, that breaks the color additivity of trichro

But it isn't that simple, isn't it - what about the Helmholtz–Kohlrausch effect, most pronounced in spectral lights, that breaks the color additivity of trichromatic theory ? http://www.handprint.com/HP/WCL/color2.html#combocolor http://www.handprint.com/HP/WCL/color2.html#combocolor But he's just probably talking about how "green-yellow" wavelenghts contribute much more to lightness perception ? http://www.handprint.com/HP/WCL/color3.html#optimalstimuli http://www.handprint.com/HP/WCL/color3.html#optimalstimuli http://www.handprint.com/HP/WCL/color11.html#valchrom http://www.handprint.com/HP/WCL/color11.html#valchrom