I feel like I've seen this thread before, but I can't find it. I need some clarification on item colors/rarity, because some folks said stuff today in-game that got me thinking I might be colorblind.

Gray
White
Orange
Green
Purple
Pink

Is this the order/colors? I was told today that there was both blue and purple. And that blue was more common than pink, and purple was rarer than pink. But if both exist, either I have only seen one, or I'm colorblind.