Oooh, I love Setacolor paints. You can get some absolutely gorgeous fabric using this light/heat sensitive paint.
Recently I used InkoDye to do sun painting. This time I used Setacolor. I wet the fabric, just as I did with the InkoDye, then poured diluted Setacolor over the fabric, lastly laying plants over the top of the fabric.
In this sample I added silver Lumiere metallic paint to the mix. When I poured the mixture it left a beautiful stream of shimmering silver behind.
Here is a picture of it after I removed the plant:
Have you tried using SetaColor Paints?