“It has no justification in experiment exactly; it just represents something that he’s imposing upon the color spectrum by analogy with music.” Of his rainbow experiment Newton wrote that he had ...

Complementary colors live on opposite sides of the color wheel. Imagine red and green, blue and orange, or yellow and purple. Or move a half step over on the wheel, and combine a yellow-green color ...

MacStories Perspective Icons come in the same colors offered by OmniFocus – there’s an icon for every default perspective color in this set. Installing the icons couldn’t be easier: starting with ...