This question has been one of great debate. Some say that the sky is blue, some say it is clear, and some even say that it is brown. The truth is blue is the color that we see because when light travels through the atmosphere the gas molecules that make up our atmosphere absorb this light and reflect the color blue. However, everyone sees color a little bit different. A person who is 'color blind' could see the sky as purple or grey. It really just is whatever color that you see.