Because my eyes are adapted to the amount of light that reaches Terra, the light balance thing they do allows a human like me (seriously, I'm human, really, cooks are human) to identify objects like metamorphic rock vs. sedimenatary rock pretty easily.
In natural Mars light, I would have a tougher time identifying objects, not counting the freezing and exploding and asphyxiating thing.
/johnny
It looks fine, right? But compare it to the panorama and you'll see the change in color balance. So let's see it the way it looks. It's on Mars! It IS Mars!