User blog comment:Zathronas/Analysis by an author: Part 2 Antagonist, the Darkness/@comment-24149763-20131217032806/@comment-12227301-20131217161222

I remember some valid source (very possibly this wiki or some episode exposition) that the Dust used today, the tool the humans used to fight back the dark, was named so in honor of the creator-dust. So my money says it's not the same, or not necessarily so.

Quoting the intro narration: "Human's resourcefulness" etc. etc."led him to the tools to help even the odds. This power was appropriately named "dust""