While afterimages are not adequately explained by the trichromatic theory of colour, they can be readily explained by theory.

Question

Quizplus · Accepted Answer

The opponent-process theory explains afterimages by suggesting that color perception is controlled by the activity of two opponent systems: a blue-yellow mechanism and a red-green mechanism. When one color in a pair is stimulated, the other is inhibited, leading to afterimages when the stimulus is removed.

While Afterimages Are Not Adequately Explained by the Trichromatic Theory