Purple is the hardest color for the eye to discriminate. Okay, stop reading right this second and check out Hinton’s Lilac Chaser online-optical-illusion-visual-phenomenon gizmo! (Follow the instructions there and be amazed…Go ahead, do it. We’ll wait.)
Purple is also very rare, in nature. But we caught glimpses of it just yesterday morning on a pre-dawn, pre-work out ‘n back to Execution Rocks lighthouse, as the sun played peekaboo with us and the Long Island Sound.