The sky

People say that the sky signifies freedom and whatnot. But didn't some say that blue was the color of sadness? black is just..dark and red means angry. During clear days, the sky is blue. During rainy days, it's grey, almost black and during some evenings, the sky looks crimson. Doesn't that mean that the bright sky is actually sad? The rainy days that are meant to be peaceful is actually feeling dark, depressed? The beautiful evenings where the ocassional red is seen means that the sky is angry? It's really ironic.