The THEMIS VIS camera contains 5 filters. The data from different filters can be combined in multiple ways to create a false color image. This image from NASA 2001 Mars Odyssey spacecraft shows the surface of the south polar cap during springtime.
Orbit Number: 7298 Latitude: -82.1416 Longitude: 128.053 Instrument: VIS Captured: 2003-08-07 07:32
http://photojournal.jpl.nasa.gov/catalog/PIA19461