I see ! Much easier with a picture. I like the effect - could try the two colour one on fabric to piece and quilt - I'm looking for a small quilt project for Thursday afternoons !
You would need to add salt and soda to your procion dye and make sure you had prewashed your fabric. It would work just the same. I loved working with the gesso as it gives a lovely key to the surface and adds texture.
Wow what a fantastic day you had