A while back I read an article that a 19th century artist – it may be John Singer Sargent – used wax as a resist in watercolor painting. That was a bit of a surprise as I never thought a “professional” painter would do that. We used crayons and watercolors together in elementary school, and it was a lot of fun. Not having any crayons, I got out a white candle and scribbled away in a palm tree sort of shape. Then I painted, beginning with the yellows and then moving into darker colors. I don’t recall many of the colors I used, but they do include Yellow Ochre, Hooker’s Green, May Green, Payne’s Grey, Ruby Red, Cerulean Blue, Ultramarine Blue. The wax served to keep white spaces white, obviously. And, I actually used negative painting ti create some of the shapes in the fronds and trunk of the tree.