This actually started out as a painting of a tree on a hill. When I was done painting it, I wasn’t very happy with it, so I left the tape border on for about a week while I thought about what I actually wanted to paint. You can see a little bit of the original painting where the paint bled under the tape.
I only used black & white here because I wanted to focus exclusively on values (light & shadow) instead of colors. The paint is actually slightly bluer than what you see here, even though I didn’t mix in any blue to the black & gray tones. It’s such a subtle shade that I think it might be part of the black pigmentation, and not the colors of the previous painting showing through.