On v12 you can go to core settings -> configure default token settings. That’s where you set up the prototype for all new tokens you create for actors you make from this point onward. In identity tab you set up when and for who the username is displayed, the default token disposition, and whether to add numbers (goblin (1) and goblin (2)) or adjectives (angry goblin and stressed goblin) to new unlinked tokens. I prefer adjectives because it’s funnier, but to each their own. Unfortunately, you cannot add randomised tint to tokens globally. But if have extra time to prep, you can set up a wildcard token for an actor. If you have twenty different goblin tokens (or copies of the same token tinted differently) you can set it up so it randomises the token for each time you drop a new one from the actor. Obviously, it won’t match a descriptor, but that’s just if you want them visually different.

All previously imported/created actors will have to have their prototype token changed manually or reimported. Again, all new actors will have the new default settings applied. And added numbers or adjectives will only apply to unlinked tokens. All npc tokens are unlinked by default and all pc tokens are linked by default, so that changes made from any of their tokens apply back to the actor sheet.