[Red Badger]

My question is: Why are they both a relatively uniform blue, while Saturn and Jupiter are multicolored and banded?..................

[Telepathic Intruder]

They're smaller, contain more volatile materials such as methane in their upper atmospheres, they're farther from the sun, and don't generate as much internal heat. That may have something to do with it. Interesting though that they're both approximately the same size and appearance.

By the way, it was recently revealed that Neptune's dark blue appearance is just an artifact of image enhancement due to the lower amount of sunlight in order to see more details in the upper atmosphere. To the human eye, it's actually the same light blue color that Uranus is.

[CtBigPat]

My question is: Why are they both a relatively uniform blue, while Saturn and Jupiter are multicolored and banded?..................

They are so cold, they're turning blue!

[Paul R.]

Perhaps Jupiter and to a lesser degree Saturn have picked up a lot more “contaminants” from the Asteroid Belt? Plus more effect(s) from the Sun to keep things active??

[BenLurkin]

I suspect that most of the color people attribute to all these planets is in fact false color added by NASA for its own reasons.