Blue eyes get their color the same way water and the sky get their blue color. They scatter light so that more blue light reflects back out. Eye color depends on the iris, the colored part of the eye.

In a certain light, isn’t this how the world seems in childhood? If your father is blue or cold ... greatcoats and forest mists and the eyes of Mrs. Marquis. ‘Costumes help inform a character ...

In case you were in any doubt, blue eyeshadow is making a comeback thanks to Millie Bobby Brown.