"Together, the garden, the woods, the meadow and the distant land form a harmony of colors and shapes. There is always harmony in every season, at every hour of the day. The evening colors harmonize with the setting sun; the color of things fits in with the rising sun in the morning; shades and contours of everything adapt themselves to the winter, as a landscape in the snow or a snow-covered street. Always, down to the last detail, there is a harmonious whole." -J.H. Van den Berg
Here's one more Good Quote on colors, this time from Picasso: Good Quote: Picasso.