User blog comment:ChishioKunrin/Dust Speculation and Whatnot/@comment-25958301-20150112164229/@comment-4010415-20150113023632

Maybe. It's hard to see if it's just an empty space, some part of the magazine, or if there is actually a vial of black Dust there.

I remember people theorizing about "smoke Dust" way back when we got this image of Myrtenaster, Dust crystals, and vials of Dust, but I'm not sure whether to call that crystal gray or black.