*Extension- Look at the work of Artist
James Turrell . His "Skylight Series" features empty rooms with large windows that open to the sky in the ceiling. By forcing people to look just at the sky with no other distractions it becomes clear that the color of the sky is always changing! There are hundreds of different shades of blue, white, black and orange. You can observe some of them in the linked images. Try looking at the sky in your SP at different times of day and observe how that changes the color of the sky.