well for example look at pastels because that is the easiest to definitively judge. A high qulity pastel should be bright yellow with a lot of blushing, to some people the color is more important others the blushing, I like both, babies should be yellow not orange, yellow babies will be better looking as adults and brown out less than orange babies.... A low quality animal is browned out, babies will be verry low color, or orange, and have little blushing......