Author fashion More Axolotl Variants decided to add new colors for axolotls in Minecraft Bedrock, even if in real life this color cannot be. Now familiar mobs will be much nicer than before. So far, only five options are available, but in the future the author promises to increase their number. The spawn rate is the same for each species, so you’ll have to search for mob dwellings to find the color you want.
The axolotls in the bucket do not show the name of the new mob.