Hello, I'm wondering why do we have colors? If protons and neutrons are build upon the same particles shouldn't we have one single color? Else, if you put something transparent of for example red color under the beam of light, light will become of the color of the thing you put under, why is it? and how photons absorb color? Walking along the school hallway I just realized that the same light-line you see will be visible from every angle you look, meaning light reflects on the floor in every single place, but yet you see only one steady light beam again why does it happen? Also, why do reflections happen? reflections are just waves of light aren't they? can anyone provide an explanation of reflections?