Jupiter in True and False Color (NASA)
"These color composite frames of the mid-section of Jupiter were acquired by the Cassini spacecraft on December 31, 2000. The frame on the left is a natural color composite yielding the color that Jupiter would have if seen by the naked eye."
The Colors of the Planets (Universe Today)
"Often in the news or in magazines, we see beautiful pictures of bright, colorful planets. These photos are either taken through special filters or touched up afterwords. This is done in order to bring out greater details of the 8 planets."