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The color of Uranus is a blue-green color, and the color of Neptune is a bright azure blue. The reason this is the color of Uranus is due to its atmosphere and its ability to absorb different bands of light.
  Uranus has a blue green atmosphere because it has a very deep methane(hydrogen)layer that gives its blue green atmosphere.  From:a 8 year old child  .25 people found this useful. Edit. The absorption of red light by methane crystals in the upper atmosphere of Uranus gives it its blue/green appearance.