Colored nautilus variants

I was thinking that as well as the current orange nautilus, we could also include another couple of colors such as yellow or blue shelled nautilus.

This could also mean adding different shell drops for each one, similar to the way the 3 types of chicken drop different eggs.

These colored nautilus could spawn depending on random rarity or on the biome temperature or condition.

This would enhance the levels of customisation for your own pet nautilus in-game, making it more fun to find your favourite variant!