Only certain paints will work well in marbling - they have to be able to float on the surface of the "size". Some do, some don't. The paints are thinned with water, Versatex Dispersant, or Oxgall so you will use less than when painting directly. continued...
Pros:
Great for marbling, leaves soft hand on fabric, very concentrated pigment Cons: Needs the addition of a catalyst to make it permanent, either a heatfix catalyst, or an airfix catalyst.
Pros:
Has different consistencies for sunpainting (Transparent Colors) or painting over a
dark color (Opaque colors), or enhancing with a metallic (Pearlescent
Colors) Cons: None