The New Farm Animals are not diverse enough

The addition that has been brought recently to minecraft is good but only one variant for the cold, temperate and warm biomes for each animal respectively does not help too much.

For example , if you are in a cold biome , you will only stumble upon the same chicken, it being gray is good , as the player can better differentiate between the climates in which those animals live in and it serves a great education purpose, but in real life , such ''cold'' , cool gray chicken would have way more natural variations.

Therefore i suggest that the cold-biome-chicken in this case, should have 3 more variants, still gray or mostly gray, but then it would really and I mean really , bring so much more life to the biomes themselves respectively , almost like how the tropical fish has so many variants but on a much smaller scale.

And this should be done , to the warm chicken , and the temperate one too. And the same goes for the pig and the cow with their temperature dependent variations respectively .