I was just wondering this myself. Yes, it is the standard packaging. As to why, all I could guess is from a supply chain/logistics standpoint, it's simpler. They only have to manufacture one universal box/packaging for each color, as opposed to three like they've had to do in the past.
Not sure what it really saves them in the end, but they must've deemed it worthwhile.
But in the end, who cares about the box? lol It's going straight to the closet.