A Mandelbrot fractal is not a sphere; there being a circle in its interior doesn't make a sphere a fractal. Milk has the color white, yes, but it is not the color white. I asked for a bucket of (pure) color white, not some liquid that happens to be white. No, I was talking about the color white, not the additive color white. Please stop putting words in my mouth. (Irrelevant.) And care to respond to my statement that a color is not a mathematical value, or have you purposefully ignored that part of my post? Edit: You've changed your post... Same problem: snow has the color white, but is not the color white. Irrelevant; I didn't make such a statement either. What is a "fundamental frequency"? And it's false anyway; the human eye responds to whole ranges of frequencies. See: https://en.wikipedia.org/wiki/Spectral_sensitivity#/media/File:Cones_SMJ2_E.svg Please explain how the color red is a potential?