What color should the protons and neutrons be on my circular clock?

Question

The background is black and the electrons are silver marbles. I think that the protons should be white and the neutrons gray, but my dad likes red and yellow. Which of us has a better color scheme, or do you think we need a new one altogether?

Answer 1

Serious answer: neither protons nor electrons have any true color as they are too small to reflect or absorb light.

Less than serious answer:  think of a car battery which has 2 poles, negative and positive.  Assign a value to your protons and neutrons and color them green and red accordingly.

Answer 2

What ever you like is fine.  The red and grey might be visually more pleasing and easy because the contrast between red, yellow, and silver is great.