We all know what the arts are like.
I don't.
White is the blending of all colors and is a color.
Explanation:
Light appears colorless or white. Sunlight is white light that is composed of all the colors of the spectrum. A rainbow is proof. You can't see the colors of sunlight except when atmospheric conditions bend the light rays and create a rainbow. You can also use a prism to demonstrate this.
Fact: The sum of all the colors of light add up to white. This is additive color theory.
It would also appear I've contradicted myself. Job well done.