"The Color Of Air"
What do the skies of Jupiter, Saturn, Uranus, and Neptune look like from their respective cloud tops?
Today we know exactly what color the sky is on Mars because of a host of successful U.S . probes but just a few short years ago we could only speculate. We know the color of our Earthly sky in all it's incredible variations and we know the color of Titans sky thanks to a small European probe that actually landed on the surface of that Saturnian moon. With the Russian Venera craft we have a good idea what the color of the skies of Venus are but what about the rest?
Taking what is already known I would speculate that we may be able to deduce a given sky color from accurate color image data gathered by space probes and telescopes. The trick is to look at the atmospheric hazing as the air curves around the planets limb. If you have similarly colored features on the visible surface, one in the center and one at the limb or edge, you can determine the color that tints the object on the edge. Since the edge object has more air between it and the observer the color that correctly overlays and tints the center object so that it matches the edge object could be the haze color. If you saturate the haze color 100% you may get the sky color as seen from the surface.
This method works well for all the known sky colors as seen here:
Venus Earth Mars
Below are images I created with the possible sky colors of the remaining planets as determined by my tint color comparison method. Keep in mind that each of these skies will have an infinite variety of looks and colors just like our own sky on Earth but in general this may be the base color.
Jupiter: It was a big surprise to see that Jupiter may have a golden sky. I sampled two places and came up with the same golden sky.
Saturn: Saturn could have a very blue sky above a thick ocher haze.
Uranus: Uranus may have an extraordinary deep turquoise sky.
Neptune: Neptune could have a somewhat familiar looking sky but with a much deeper blue.