Squid Ink should Stain Players

Squid ink should stain the player by temporarily darkening their skin and armor textures. Glow squids should do something similar by making the skin and armor texture luminescent so that they can be seen clearly in the dark like an enderman's eyes. Squid ink actually does stain people and this fun trope has been used many times in cartoons. This feature would add some flavor to some somewhat bland mobs.