Love the fabrics, Quilty! There are a few pics of 4 color disappearing 9 patch quilts. I personally like to use 4 or more colors, but if you used the blue solid with the original three fabrics you posted - I think it would look great! I found this thread on the QB where the OP asked for D9P with 4 colors. Lots of pics in this thread! Do post pics of yours when you are finished.
http://www.quiltingboard.com/main-f1...s-t159483.html