Why do objects look a certain color?

Why does colored glass transmit a certain color of light?

What are the three primary colors for light addition?

What colors appear when lights of any two primary colors are shone a white object?

How would you guess a TV set makes purple?

What is color subtraction?

When is color subtraction used?

What color do you get when you mix blue paint with yellow paint?

Why is the sky blue?

What is the true color of water?