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The brain and eye helps in the process of seeing colors. Some people who are color binds can't differentiate between colors. There visualization system is too low.
According to psychology. Color is a experience of mind and we see color through our eyes.

The people's who are able to do biokenisis know about color blinds and can distinguish color very easily.

The animals and humans all have the ability to see color. Wavelength is another factor in this case. Where's some animals see more clearly than humans. They have a good eyesight capacity for identifying color in their visual system.

Opponent-Process Theory

Developed by Ewald Hering(1920/1964), the opponent-process theory states that the cone photoreceptors are linked together to form three opposing colour pairs: blue/yellow, red/green, and black/white.  Activation of one member of the pair inhibits activity in the other.  Consistent with this theory, no two members of a pair can be seen at the same location

Moreover this theory was wrong in some matter because it leads to some kinds of deficiency. They can be easily confused on the color what they are looking it may be green, black or red. They can't recognize by this deficiency.
The eye cell with stimuli provides unclear vision by which it's very difficult to see and understand colors.
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