Opponent process

Opponent process is a theory that explains how our eyes and brain work together to see colors. Your eyes have different types of cells called cones. Each cone picks up different colors. The cones send information to your brain, and your brain mixes the colors together to form the colors you see. Opponent process theory suggests that there are three groups of colors and they are opposites of each other. The three groups are red-green, blue-yellow and black-white. To make a rainbow, your brain mixes all the colors together- the reds, greens, blues, yellows, and whites.