Yellow is a primary color in subtractive color systems used in both painting or color printing!
That sounds like a versatile color. What is a subtractive color system?
A subtractive color is a model that explains the mixing of a limited set of dyes, inks, paint pigments or anything similar to create a wider range of clors. Each diffrent colo is the result of partially or completely subtracting (aka absorbing) some wavelengths of light and not others.
That sounds very intricate and involved. I was not aware that such advanced methods were used to expand our access to a range of colors.
Color***** and yup.Yellow is important in nature as well because they absorb light energy and protect plants from photodamage. 
Wow even more uses, does the color yellow interact with the chlorophyll in some plants while absorbing light energy?
as egg yolks, buttercups, and bananas. They absorb light energy and protect plants from photodamage. Sunlight has a slight yellowish hue when sun is near a horizon, due to atmosphere scattering shorter wavelengths (green, blue, and violet).
Because it was widely available, yellow ochre pigment was one of the first colors used in art; the Lascaux cave in France has a painting of a yellow horse 17,000 years old. Ochre and orpiment pigments were used to represent gold and skin color in Egyptian tombs, then
:SubtractiveColor.svg|thumb|Subtractive color mixing: combining yellow and magenta yields red; combining all three primary colors together yields black]]
[[Subtractive color]]ing uses dyes, inks, pigments, or filters to absorb some wavelengths of light and not others. The color that a surface displays comes from the parts of the visible spectrum that are not absorbed and therefore remain visible. Without pigments or dye, fabric fibers, paint base and paper are usually made of particles that scatter white light (all colors) well in all directions. When