original: the nervous system derives color by comparing the responses to light from the several types of cone photoreceptors in the eye .
simplifications: the nervous system derives color by comparing the responses to light from many types of cone photoreceptors in the eye . the nervous system gets color by comparing the responses -lrb- acting in reply to one 's action -rrb- to light from the several types of cone photoreceptors -lrb- a structure in a living organism , esp. a sensory cell or sense organ , that responds to light falling on it -rrb- in the eye . the nervous system compares the responses to light from the several types of cone photoreceptors in the eye to derive color . the nervous system can tell color by comparing responses to light from the cone photoreceptors in the eye . the nervous system gets color by comparing the responses to light from the many types of cone photoreceptors in the eye . the brain can tell color by comparing the responses to light from the several types of cone photoreceptors in the eye . the nervous system gets color by comparing the responses of light from the several types of cone photoreceptors in the eye . the nervous system obtains color by comparing the responses to light from the several types of cone photoreceptors in the eye .