Take any color picture, digital or chemical, and then adjust it any way you like, until it is as close to the original (under original lighting conditions) as possible. You can NEVER get the picture to match the original, if the original has any bright and broadband coloration. You can come close. Take the closest match, then change the lighting conditions. They no longer match very well at all.

The problem is that no imaging system has the same color sensitivity as the human eye. One can approximate the eye's responsiveness, but never quite match. Then, no matter how you display the picture, it is not possible to use a dye or phosphor that can translate the image in such a way as to exactly match the eye's sensitivity.

Every color picture depends on the incident lighting, the imaging system, the display system, and the ambient lighting in the place where the final image is views. It is impossible to make everything match perfectly. It just can not be done.

So people should stop griping about the colors of the Mars pictures and be glad to seem them at all.