Board Thread:General Discussion/@comment-35523179-20180925233113/@comment-33926652-20181001155653

Erhixon wrote: Blue colors usually. The reason why blue colors are common is because Cyan and magenta can make up the color wheel. The primary colors of light are Red, Blue, And green. But when you remove the light you get Cyan, Magenta, And yellow. Look at the retrosun above, You can see cyan in the mountains, Magenta in the ground, And yellow in the sun.

Here is a article if you need more information.

https://www.quora.com/Are-Cyan-Magenta-and-Yellow-the-real-primary-colors