Thread:Darkcloud1111/@comment-15108745-20130826011959/@comment-3146930-20130826014833

When people use high levels of Dust, magic circles can clearly be seen. This can be seen when Glynda calls on a hail storm, Crimson turns the debris in the fight to ashes, and Weiss uses the Dust in her sword.

As far as the dark clouds, I think those are just the flashes caused by Ruby firing the gun. Even so, Ruby herself doesn't seem able to manipulate Dust, even if her bullets somehow use it. It is why I'm changing the definition of the category.