all the tiny particles in the sky that make the light scatter.
Right, and because the light particles on the blue side of the visible spectrum have more energy than the ones on the red side, blue light gets scattered less, it just ‘pushes through’ the crowd of tiny particles and that is why the sky is blue, when it’s blue. Clouds however consist of water droplets, that are a lot larger that photons and therefore all visible light gets scattered evenly and that is why clouds are usually white/grey.
