Here's another example of something I doodled in Photoshop as I continued to explore it a few years ago in 2008. I used one brush and started with one color. I used colors I came up with during the painting process as my palette. The more I painted the more colors I had to choose from and modify. Before I knew it I had this unusual composition all the while sticking with that one brush. Fun exercise to work in color with no distinct visual goal in mind and then see what happens.