That effect—which makes the red colors appear darker in contrast to brighter greens and blues—typically takes 20 to 30 minutes to perceive as day turns to night, though during an eclipse the ...

Those viewing a total solar eclipse might experience an optical illusion known as the Purkinje effect, which causes red colors to look muted and greens and blues to pop.

Solar eclipse will create Purkinje effect — and red, green clothes will help you see it Jenna Prestininzi Detroit Free Press 0:02 ...