User blog:DiegoAnime3000/Black is for Polarity

I was trying to find some explanation for Weiss' abilities. She has all these colors and some of them have more than one ability. For example: Red not only gave her strength but it also creates fire. Her Glyph in the trailer is white but in the series is blue, that's one of the reasons why it can't be fully explained, we need an episode where Glynda teach us about Dust and how it works.

But one of the things I noticed is that Pyrrha's original aura has the same color as her hair, so why does her aura changes when she used her semblance (polarity)? Then I remembered that one of Weiss' Glyphs was black, so I re-watched a few scenes of Weiss and came to a conclusion:

Black color in aura and dust is for Polarity.

The first time we see black color in the series is during the Nevermore battle in Players and Pieces:

What happened during the scene was:

Weiss created a Glyph, then with a move of her fingers, she changed its color into black. Ruby landed on the Glyph and stayed right on it without falling. The Glyph was "pulling" her weapon to prepare the launch.

Also, when Weiss "shoots" Ruby, the color of her Glyph changes into red; again, Red gave her strength to launch Ruby like a bullet.

The second time we see black color in the series is during the Boarbatusk fight in The badge and The Burden, Pt. 2:

What happened during the scene was:

When Weiss was about to finish off the Grimm, she created a Glyph, then it changed into black and Weiss remains in the air thanks to the "Polarity" Glyph.

Also, when Weiss launches herself into the Boarbatusk, her Glyph became blue again and she jumps from it. She used the same Glyph to stop the Boarbatusk's charge since the blue Glyph is exactly that, a simple Glyph strong enough to be used as a floor to jump from it and a wall to protect yourself.

The third time we see black color in the series is during the Ursa Major fight in Forever Fall, Pt. 2:

What happened during the scene was:

Pyrrha used her Semblance (Polarity) to move Jaune's shield, saving him from the Ursa's claw.

Notice the black color in her hand  >

As you can see, Pyrrha's aura is the same color as her hair but when she uses her semblance, her red aura becomes black. The same color of Weiss' Glyph which pulls things to remain in the air.

My conclusion: Black is for Polarity.