Creates random patches of black or very dark marking colors on your dragon; It may be very slightly tinted but should appear black on the dragon. It should appear to be the darkest color on your dragon. They should be solid, random patches. It should never have a full gradient edge. You may layer this as you please, or you may use it like a Top Layer Marking. This is inspired by interstellar dust.
Here is the minimum and maximum for Dust coverage:
Color Rules
Dust will always be black. If you are using near-blacks, it should still appear unmistakably black and be the darkest color on the design.
Texture and Shape Rules
It should have a solid or slightly soft edge. The shape itself will be solid and random; any spots will be closely associated with the mark, and any holes will be close to the edge. You can either do a large, mostly solid pattern, or you may create soft patches. These patches may appear cloud-like, as long as they are black.
Here are examples of what NOT to do. The left has large holes as well as shaped tail marks. Dust should appear randomly or organically shaped. The right has an edge with too many holes and an unnaturally shaped neck marking.
Interactions
Sooty - If Dust covers the maximum amount of space (and vice versa), then showing the other mark is optional.
Charged Dust
May have a solid, soft, blended, or textured edge. This texture may be quite heavy, as in the below example!