When the Protodermic Kanohi Nuva became available, I bought 10 packs of them and never got pearl gray ones. I was buying them sporadically from Kmart. Kmart was the only place to shop for toys. It turns out that somebody had been using a small pen to make holes to look in the boxes, so they bought up all the harder to find masks. There also was a Bohrok Kal with an empty black bag. Anyway, I did end up getting a full set of red Nuva masks. I am still looking for a pearl gray Hau Nuva to this day.