I have been playing around with pastels on dark paper. I decided to try the black sandpaper I found at the local Hardware store to experiment on. They have several different grits in dark colors. I did the 8″ x 8″ “Watching the Sunset” on 3M paper, No 220, a glittery black with a fine grit. Not sure if I love this paper, it seemed that there was not really a lot of tooth, and the pastel didn’t take as well as I hoped, you can see a lot of the paper behind it. But the colors show up well on the black paper.