This painting has seen many revisions and I think that I am now satisfied. I am still using the 3 color palette...but to vary the reds I used Quinacridone Red. I like the true reds and the darker reds that I could get. I also used a bit of Permanent Green Light to get a true green. Those are two of the colors that I have the most trouble getting exactly what I want. Maybe I am just not mixing correctly.