False-Color Red Spot
This Voyager 1 picture of the great red spot shows a white oval with its “wake” of counter-rotating vortices. North is at the top and the distance from top to bottom is about 24,000 km. This enhanced color view emphasizes red and blue at the expense of green. Note the puffy features inside the GRS, and the “reverse-S” spirals inside both the GRS and the oval. The large white feature extending over the northern part of the GRS was observed to revolve about the GRS center with a period of 6 days.
(via: Wired Science)