der Mouse wrote:
RGB isn't enough - not everyone's visual system's response can be
modeled accurately by RGB. (Some people have colour receptors whose
response peaks are at nonstandard frequencies; a few people even have
more than three different colour receptors.)
Just what kind of people have more than 3 color receptors.
Offhand I think there is a older system for color mesurment
and just forget what it was. Remember colors of light and
colors of pigment require two different systems of mesurememnt.
Play around with real raytracing and you will see how hard it
is to get any realistic looking colors.