TIL that we use Green-and Blue-Screen instead of Red because there is no blue or green pigment in our skin.

https://en.wikipedia.org/wiki/Chroma_key#Background



Submitted February 06, 2015 at 01:36PM by vikinick http://www.reddit.com/r/todayilearned/comments/2uyszr/til_that_we_use_greenand_bluescreen_instead_of/