User blog comment:Maki Kuronami/Monty in the 8-bit Salute Livestream/@comment-3146930-20140518233526/@comment-4010415-20140519055136

Aha! I couldn't remember exactly what colors of dust came out when she closed her suitcase, so I looked up an image of it happening. Blue and yellow. Mystery solved! I guess Ruby did mess something up when she fell on the suitcases.

Weiss really should've checked those vials better.