Coloration is absolutely subjective, in that different people see colors differently, even without obvious vision problems like colorblindness. My wife and I o

Coloration is absolutely subjective, in that different people see colors differently, even without obvious vision problems like colorblindness. My wife and I often argue about whether something is blue or green, or blue or purple. We're both rather good at discerning tiny changes in hue (I'm one of the few men that are gifted in this, I believe) but we're both certain of our answers.