photoreceptors
Green
How to respond to Mrs. Green will depend on the situation you in.
red or green? (chili that is)
shades of light and dark but mostly green
Most likely chlorophyll (but not always) and it will be green.
Actually, our brains perceive the color. Eyes are a sensory organ. When light of various frequencies enters the eyes through the lens and falls on the retina, different chemicals in the retinal cells respond to different properties of the light. Some color sensitive chemicals respond to differences in the red-green frequency shifts, while others respond to differences in the blue-yellow frequency shifts. When these chemical dyes are stimulated by light, the nerve cells that contain them are stimulated and send signals to higher organizations of nerves in the brain that interpret the significance of the color differences. Other nerves in the retina are specialized to respond to dark/light differences; still others respond to movement.
This would be a simple descriptive poem. It uses imagery to evoke a visual and sensory experience of green grass swaying in the wind.
"red or green?"
Violet, blue, and red are the colors your eye responds to most when looking at a green leaf.
Introduce genes for different opsins that respond in the green region of the spectrum.
Most likely green in the United States.
Green sapphirealexandriteemeraldzirconperidotaquamarinediopsideapatitechrysoberylkornerupinesphenejade