[X] My Assistant

[SigurRosFan]

http://marsrovers.jpl.nasa.gov/gallery/pre.../20060104a.html - Bird's-Eye View of Opportunity at 'Erebus'

[vikingmars]

... And, please, don't forget that :
(i) the Martian sky is undergoing a lot of color changes over the seasons (measured traditionally since the Viking era at 20° above the horizon) from a creamy "peachy" orange-pink color in winter to a medium-dark pink (NOT blue !) in summer ;
(ii) the sky opacity (its dust content) varies sometimes widly over several days meaning a change between a small and a huge contrast ;
(iii) the position of the sun in the sky affects also the human perception of colors when looking around to the landscape (noticed by the astronauts on the Moon)...

...so a change in luminosity and contrast affects a lot the colors themselves. As we used to say during the "old" Viking times "Finding and reproducing the Martian colors is really Art" !
As Napoléon said : "A good image worths a long speech" : thus see herebelow an illustration taken from VoM showing the changes on Mars over its seasons...

Attached thumbnail(s)