on color

I understand how scarlet can differ from crimson because I know that the smell of an orange is not the smell of a grapefruit. I can also conceive that colors have shades and guess what shades are. In smell and taste there are varieties not broad enough to be fundamental; so I call them shades. There are half a dozen roses near me. They all have the unmistakable rose scent; yet my nose tells me that they are not the same. The American Beauty is distinct from the Jacqueminot and La France. Odors in certain grasses fade as really to my senses as certain colors do to yours in the sun. … I make use of analogies like these to enlarge my conceptions of colors. … The force of association drives me to say that white is exalted and pure, green is exuberant, red suggests love or shame or strength. Without the color or its equivalent, life to me would be dark, barren, a vast blackness.

Thus through an inner law of completeness my thoughts are not permitted to be colorless. It strains my mind to separate color and sound from objects. Since my education began I have always had things described to me with their colors and sounds by one with keen senses and a fine feeling for the significant. Therefore, I habitually think of things as colored and resonant. Habit accounts for part. The soul sense accounts for another part. The brain with its five-sensed construction asserts its right and accounts for the rest. Inclusive of all, the unity of the world demands that color be kept in it whether I have cognizance of it or not. Rather than be shut out, I take part in it by discussing it, happy in the happiness of those near me who gaze at the lovely hues of the sunset or the rainbow. 

 Hellen Keller
The World I Live In
pp 105 ff.