Board Thread:Speculation House/@comment-5047068-20140615190405/@comment-5047068-20150423224141

Darkcloud1111 wrote: I've actually talked about this a few other times. Weiss' Glyphs create platforms that operate on simple push/pull physics (think gravity platforms).

Her light-blue Glyphs have the ability to push things away from anything that lands on top of it or anything that hits it. This can be seen when she uses this Glyph as her landing strategy, when Ruby runs up the side of the cliff, and during her fight with the Boarbatusk.

The black Glyph on the other hand seems to work as the opposite, pulling or holding things in place. This can be see when Weiss holds Ruby in place when she is about to launch her at the Nevermore, as well as when she holds herself in place during her fight with the Boarbatusk, before launching herself at it.

However her Glyph does turn red when she is launching Ruby, possibly leading to some effect we are currently unaware of. This could also mean that Weiss has a rainbow of Glyphs with abilities we are not yet aware of. I realized what the Red Glyph does way too late--as of Episode 11 of Volume 2, we know Dust can be combined with Semblances. This isn't what she's doing when it turns black--that's just how her Glyphs work and it did that for animation purposes, as the "holding/pulling" function it fulfilled was the same one the white/light blue glyphs did that helped Ruby run the Nevermore up the cliff.

At this point though, it's fairly easy to surmise that the glyph turning red was Weiss combining red dust, which we know has repulsive and combustible/explosive/flammable properties, into her Glyph, which also explains why the ground cracked around the launch area when Weiss slung Ruby towards the Nevermore.

I'm going to go ahead and add that, any objections?

There also seems to be dust infusing in her Glyph "mine trap" that she uses on the Knight in her trailer, as she's seen rotating her capsule revolver in Myrtenaster right before she triggers it.