Many games have predefined levels of rarity: common, uncommon, rare, epic, legendary, to use the WoW model. Do we have those levels set, what are the rarity levels referred to as, and do they have colors?
TL;DRThere are no rarity colors, but loot boxes have fixed tiers such as common, uncommon and rare, whose likelihood and contents vary by location and are still being balanced with the economy team.
They definitely don't have colors. We're not doing that. It would not fit with the level of realism that we're going for. We do have some fixed rarity tiers of loot boxes. And at the moment, off the top of my head, I think we've got common, uncommon, rare. But what that means is not a global setting. So how likely you are to find a rare loot box is not going to be the same in every location, and its contents are not going to be the same in every location. It's something that the designers are thinking a lot about: how to balance what crates and what contents you get where. And it's also something that we are having ongoing discussions with the economy team about, how we balance the amount of value you can get out of containers.
Also, rare for Stanton doesn't mean that it's rare in Pyro, for example. So items that you are more likely to find in Stanton are probably less likely to be found in Pyro.