Perception of colors in human beings?

The perception of color is due to three types of light-sensitive cells called "cones" in the retina. (There is actually a fourth type, commonly called "rods", but these are more used for night vision and low-light conditions ... and since there is only one kind of rod, this is not involved in color vision.)

The three types of cones each respond to light of different energies (light of different parts of the visible spectrum). One responds so lower energy light (longer wavelengths ... the red end of the spectrum). One responds to medium-energy light (medium wavelengths ... the greens in the middle of the spectrum). And the third responds to higher-energy light (shorter wavelengths ... the blues and violets at the other end of the spectrum).

We can call these red cones, green cones, and blue cones if you want ... but it's more correct to call them LW cones, MW cones, and SW cones (for long-wavelength, medium-wavelength, and short-wavelength cones).

So light reflected off of a colored object will tickle these three types of cones in different mixtures. For example, the light reflecting off a banana will tickle the red (LW) cones and green (MW) cones, but not the (SW) cones. That is the sensation we call "yellow."

That's basically it. All colors we see are due to how much the light tickles each of those three types of cones.

well, the colors you see is actually light bouncing off objects, and what ever color is absorbed or not bounced off of the object is the color displayed. the human eye can detect these colors using the rods and cones within our eyes. the color spectrum (red,orange,yellow,green,blue,indigo,purple) is only a small section, but the human eye cannot pick up infrared or ultraviolet light. i hope that helps

The one who created us, Rab' knows what colour would look nice on us and what colour to create us with so it suits us the best. There are many coloured people like White, Brown, Light/Dark Brown, Crimson Brown, Light Black, Black, Golden White, Pinkish Red, Pinkish Brown, etc. Color varies, my favourite colour is sky blue but I would say that I would not be loving to get something which my Rab' didn't will to give me, happy with what I got so far:)