"Each colour is unique, but no colour can stand alone. To get the full value of its unique colour it must have other hues by its side, not for mere contrast, as black, say, contrasts with white, or square with circle, but prismatically to break up the rays of colour, as a shuttlecock is tossed, to and from the waves of light. Thus all the most brilliant things of nature are composed of tiny facets or mirrors which reflect and re-reflect each other - kingfisher's breast, jay's feather, butterfly's wing, fish's scales, flower petals in all their transparency - each may appear one hue, but in reality under a microscope are made up of many varied hues in true harmony, heightening each other's brilliance. So we cull our colours here and there, up and down the scale to create the particular colour we have in mind.
Yesterday I set out to pick a yellow bunch to place as a lamp on my table in dull, rainy weather. I picked Iceland poppies, marigolds, yellow iris; my bunch would not tell yellow. I added sunflowers, canary pansies, buttercups, dandelions; no yellower.
I added to my butter-like mass, two everlasting peas, magenta pink, and all my yellows broke into luminosity. Orange and gold and lemon and primrose each singing its note. Pleased with my success I added more sweet peas and drowned my yellow completely. Another colour emerged, not yellow. Each colour thus created by a supremacy over the other colours it finds itself among, has its own message, and this message is sufficient for the gamut of human thought, and corresponds to it; as music can correspond to it. The same science of intervals plays upon human emotion."