The "yellow face" of Titan (natural colors)

Caption NASA originale:"There is a slight difference in brightness from Northern to Southern hemisphere of Titan, a seasonal effect that was noted in NASA's Voyager spacecraft images, and is also clearly visible in some of the infrared images from Cassini (see http://photojournal.jpl.nasa.gov/catalog/PIA06121).
The Northern polar region is largely in darkness at this time.
This image was taken with the Cassini spacecraft wide angle camera through using red, green and blue spectral filters were combined to create this natural color view. The image was acquired at a distance of approximately 229.000 Km from Titan and at a phase, angle of 20°. Resolution in the image is about 14 Km per pixel".