Coyote, that is really pretty!
Welcome to the Quilting Board!
I just finished a D9P and used white (light),black (dark, for the center, and red prints (medium) I Used red for the outside corner blocks. Really tunred out nice.I'd send a pic but don't do't how to post on the forum. I sashed the blocks with black...really pops!
IMO, you need to make sure you have strong contrast otherwise just a mess of colors.
I love this pattern and plan to do another one soon. Great way to get rid of fab, which is what I am trying so hard to do.