Final answer:
Uranus gets its beautiful blue-green color from the presence of methane in its atmosphere, which scatters blue light.
Step-by-step explanation:
The beautiful blue-green color of Uranus is mostly due to the presence of methane in its atmosphere. Unlike Jupiter and Saturn, Uranus has an upper cloud layer composed of methane instead of ammonia. The methane in Uranus' atmosphere absorbs red light and scatters blue light, giving the planet its distinctive hue.