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?
Basically what it is is the elastic scatteringof light or other electromagnetic radiation by particles that would be smaller than the wavelength of said radiation. This whole concept was created by a British physicist, Lord Rayleigh.
Oh that's really cool!
Blue just has such a rich history, in general. The blue semi-precious stone, lapis lazuli, was used in ancient Egypt for jewelry and such. And it was used in The Renaissance to make ultramarine, which was the most expensive pigment.
I didn't know that!
it in the windows of cathedrals. Europeans wore clothing coloured with the vegetable dye woad until it was replaced by the finer indigo from America. In the 19th century, synthetic blue dyes and pigments gradually replaced mineral pigments and synthetic dyes. Dark blue became a common colour for military uniforms and later, in the late 20th century, for business suits. Because blue has commonly been associated with harmony, it was chosen as the colour of the flags of the United Nations and the European Union.
Surveys in the US and
, 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