I was looking through some material scraps that I bought a couple of years ago in Wisconsin. They are pieces of material that were used in theatrical costumes by American Players Theatre in Spring Green, Wisconsin. We go there almost every year to see Shakespeare or another delightful play in an outdoor theatre (or a time or two in the “new” small indoor theatre on their grounds).
In the pile of material, found this piece of dark brownish-taupe silk, and decided to see what happened when acrylic paint is scraped over it. This is the result.