Thread:SilenceInTheLibrary/@comment-25857155-20150423225656/@comment-5047068-20150423233645

I'm quite certain! If you look closely, Weiss does in fact spin the revolver when she activates the Glyph and it turns red. Just to be safe, the blade turning red in the White Trailer was proven immaterial/irrelevant a few episodes before Players and Pieces, when Weiss spun the revolver and selected red dust that she used to conjure fire to use on the Beowolves, but the blade didn't turn red that time either.

If I remember correctly, Dust being combined with Semblances never gets flat-out stated except in World of Remnant and only becomes clear when Blake uses it on her Shadow Semblance, so it may never get stated in-series. The red glyph is where I would say it's most specific she's using Dust and her Semblance at the same time.