There is also the great red spot, with patterns rotating counterclockwise around it. Water ice in lowest layer. The colors seem to be associated with temperature. But just what chemicals cause the colors is something of a mystery. Recall that Jupiter is hot inside.
Hot gases rise.
Cool gases fall. This happens on Earth too. Recall that on our planet weather patterns are influenced by the rotation of the Earth. Jupiter has a fast rotation rate. So we should see a bigger effect.