Have you ever wondered what happens inside a printer when you print something off? This video shows the amazingly complicated process of how color laser printers produce color images on paper.
https://electronics.howstuffworks.com/tv10.htm
This article above shows how color TVs work. It explains how the pixels create the colors we see on the screen, and also how color TVs receive their signals.
http://www.differencebetween.net/science/difference-between-additive-colors-and-subtractive-colors/
This article clearly explains the difference between additive colors and subtractive colors.
https://www.khanacademy.org/partner-content/pixar/color/color-101/v/colorscience-1
This is an interesting video that explains some of the basic science behind color. Artists from Pixar also explain in the video how they use colors in their movies to tell stories.