I have enjoyed this work. The technicalities of getting a decent picture of the color work has been enlightening. It has been a good aspect of the course.
I have been working with pure hues thinned for lights and using compliments for dark values with dyes and print paste recently. So I haven't been thinking about muted colors in the same way as in your course with tints. shades, and grayed colors. I found the chromatic grays beautiful and tricky in some ways. The value relationships seemed to change with each muted color I added in the collage studies.
I did have trouble with some technical parts of the painting. I couldn't get a nice flat painted area similar to a flat wash in watercolor painting. I did better when I switched from a round to a flat brush. There was still a lot of texture from the brush marks.I looked back through the demos and notes and didn't see anything about using an acrylic medium. I am guessing that the medium might lower the intensity too much and that we would have trouble getting intense colors.
Thanks for a thoughtfully planned course.