This pack changes it so that when you pick up an axolotl in a bucket, instead of it always being pink, it will show up as the colour of the axolotl you picked up. This is mainly for aesthetics, but also helps you keep your tiny friends sorted in your inventory. It is a really simple pack, but does require Optifine to work. If you don't have Optifine, follow this link to download the latest version: https://optifine.net/downloads