I like the color blue. 
It truly is a solid color. In fact, it's one of the three primary colors of pigments that are used in painting and traditional color theory. Even in the RGB color model! So, it provides a lot of foundation to our world.
Really how so?
Well, take the daytime sky and the deep sea, for instance. These things appear blue, but it's actually an optical effect called the Rayleigh scattering. But in essence, there are many "blue" things in our world.
I've never heard of Rayleigh scattering? What does that mean?
Rayleigh scattering
Rayleigh scattering ( ), named after the nineteenth-century British physicist Lord Rayleigh (John William Strutt), is the predominantly elastic scattering of light or other electromagnetic radiation by particles much smaller than the wavelength of the radiation. For light frequencies well below the resonance frequency of the scattering particle (normal dispersion regime), the amount of scattering is inversely proportional to the fourth power of the wavelength.
Rayleigh scattering results from the electric polarizability of the particles. The oscillating electric field of a light wave acts
, take fine lac [red lake], ultramarine blue (the same amount of the one as of the other) with a binder" he noted that it could also be made by mixing blue indigo and red hematite.
In modern color theory, also known as the RGB color model, red, green and blue are additive primary colors. Red, green and blue light combined together makes white light, and these three colors, combined in different mixtures, can produce nearly any other color. This is the principle