The coolest thing about color is how complex the perception is. Projected color isn't as special as reflected color is...... absorbing one wavelength and releasing others and then our brains have to take that and turn it into a flavor! MAN! Of course we can process the whole dern thang at the speed of light in super duper hi-def-smell-o-rama. That's some crazy stuff. And to think that there are so many other creatures see things entirely different....................well it's true! I vote for 4 infinitely blended shades of colors. Why limit yourself.