User blog comment:Zolnir/Virtual Reality/@comment-3146930-20140616204844/@comment-186.188.108.69-20140616215452

Yang's aren't petals, are Flames, which have been shown many times in the show and her trailer.

Blake's hair has been seen "dissolving" during her fight with the Spider Droid. Might I add that the dissolving effect is similar to the way her Shadows dissapear.

And while Weiss hasn't manifestated any form of energy other than in the second opening, in the White Trailer, her final attack turns the Giant Armor into Snowdust

Let's not forget about Ruby and her Petals, which are seen coming out of her cape whenever she uses her Semblance, and continually emanating from her after she finished off the Nevermore.

Considering these known facts, I make the theory that these elemental manifestations of the character's Aura, appear whenever the user performs a thecnice that puts their aura in "Overdrive". Likewise, one could suggest that when a lot of energy is stored for inmediate use, the same manifestation of the Aura could become visible.

HSXI

ps: Sorry if this comment comes out as annoying.