Recently, the crayons got to come out and play with some dark fabric. First I had to do burn test to identify the fiber content. Interpreting burn tests (hold small bit of fabric in tweezers or tongs over the flame of a candle. How does it burn? What does it smell like? How does the ash behave?--Do a google search if you need more details.) is not my strong suit, but I learned enough to trust that there is some synthetic component to this dark fabric. Whew! The crayons need 50% or more polyester in the fabric to adhere well. Time for a coloring test.
I had two tests to run. Test #1 was determining what color the crayons would be on the dark fabric. Orange on white is definitely orange, but on a dark color it's harder to know how it will look. So I drew letters with each crayon and colored them in. Orange was "o", yellow was "y", etc. "bs" is burnt sienna and "?" is a color that had no wrapper/label. Test #2 was a color transfer test. The instructions for the crayons indicate that you can color on paper, turn the paper colored side to the fabric, and iron it onto the fabric. So I tried it--and it worked! Go figure! The transferred images are not as dark as the ones where I colored directly on the fabric, but they weren't bad at all!