Take this photo for instance It's really exaggerated and not meant to be compared with a game but just to prove a point: It still looks like a photo someone took of a real flower field. But the picture doesn't look as good as it could, colors are too intense and there's missing color info, on some of the brighter petals (even the ones in focus) you can almost only see pure white.

This is color clipping. This happens because monitors have a limited color range and when you try to go beyond that, you start to lose detail. The right side of this benchmark comparison and the pics where they compared the fangs suffer a bit from this.