Reflect.
Yes
red
Red, that's why it appears red.
It does not reflect solar radiation as well as lighter skin, although perspiration would influence that. Dark skin contains melanin, a pigment that gives skin more protection from the damaging effect of ultraviolet radiation.
A red shirt does not reflect color.
the pattern most likely reflect differences in the snakes' habitat.
They are the greens. That is why plants are green
He sometimes has red skin but not all the time
All of the electromagnetic spectrum can be reflected. White light is a combination of all colors. They all reflect, red is among them.
If your have red hair, then you have very pale skin usually. But not always. The genes for red hair are associated with those for pale skin, but it is possible to have darker skin and red hair.
Red and blue are primary colours therefore they do not contain any other colour. When a blue light is shone onto a red object, all the blue light is absorbed by the red object, and as no red light is being shone for the red object to reflect, no light will be reflected from it and it will appear to be black. It is important to remember that physical colours will only reflect it's light colour equivalent. All other colours are absorbed. So red will reflect red, green will reflect green, and red will absorb green and so on.