Coloured Nautiluses + Shells

Nautiluses

I think this is pretty self explanatory but with Mojang being Mojang: you currently have 1 nautilus (which would become the Red nautilus) you could also allow have say the blue nautilus (and shell) as well as a yellow one and maybe more, you could also just do all dye colours, this allows for people to customise there mount of mayhem more and it could also be used for a new achievement and advancement possibly something like "the rainbow shells" similar to a complete catalogue and the whole pack, you could also seperate them into seperate biomes eg cold oceans have cool coloured nautiluses (blue, green) and warm biomes have warm coloured nautiluses (red orange yellow) which could help encourage exploration to find your favourite nautilus colour

Nautilus shells 

And as for the coloured shells you could also extend this to coloured conduits but as it doesn't exactly fit in with the update I understand if this part is rejected you could also add other things from this but knowing Mojang (again) they might already complain about some of this not being in a different post, and I also don't want to spend 1 hour writing a post that gets deleted because I fix a spelling mistake after it gets approved.