Why does the sky change color?

Why does the sky change color?

ST. LOUIS - The sky is always changing colors---from a bright blue on a clear day, to red and orange sunrises or sunsets, or multiple colors of a rainbow---there's a lot going on that we don't always think about. Why is the sky blue? In short terms, it all has to do with light, air and our eyes. If you look at the sun through pictures---not through the naked eye---there is a glowing white light, which is made up of all colors of the rainbow. Mad…