My main complaint has been that the ground textures are too green outside of photogrammetry areas. This may be combining with the blue tint of the atmosphere to make things a bit ‘cooler’ colored than it should be?
Compared to the view out airliner passenger windows it’s not seemed particularly wrong to me overall, but others might have better color differentiation than me. 
It’s certainly true that many people have complained about the blue tint at altitude, so you should be able to search for existing threads on this topic and see if anyone’s done an analysis.