u/Ill_Blackberry1944

[Includes Opinion] To explain the different colours for Rare, Uncommon and Common from the old one, it kinda fits in with the idea the Adopt Me team was going for when they were thinking about making it understandable for the new players. With common as grey (which a lot of games use) uncommon as light green (to give it some sort of an illusion that it's an upgrade from commons) and Rare as yellow (cuz gold is Rare irl)

I also added the Hex code in case there's a dev team member interested in the suggestion.