Trying a new UV developing product called Jacquard Solar Fast. Sort of like Inkodye but different. Can be obtained from Dharma Trading Co. www.dharmatrading.com This is the sepia - there are lots of colors, and they can be mixed.
Thanks, Heinz. It's sort of a photogram. The material is made for putting patterns on fabric. I brush it on watercolor paper, place the flowers on it, and expose it to the sun for 10-15 minutes. Then the unexposed material is washed out with very hot water and detergent. It's similar to Ink o Dye which I have some on my site.