I've really enjoyed this exercise. I found a painting by Diebenkorn (Invented Landscape, here with a distorted aspect ratio) to use to match the colors. With the color wheel, I feel that I honed in pretty well where I needed to go for most of the colors. I had trouble with the color chip on the far right - I started with red and green, but after I had done the dark blue (the 3rd color chip, hard to see the dark blue with the not-so-great quality of my photo...), I found that I was missing the orange! With just orange and black, I got the square in the right column. There are so many colors in black! It is exciting to see here the relations between his color choices. I'm looking forward to doing more.