This actually came to me after I had gone to bed. I had cut the strips for the border sides but couldn't decide what to do with the corners. I had already cut plain light corner blocks but they just weren't right. When I thought of doing a D9P block corner where the light strips continue out into the borders, I couldn't wait until morning to try it. I had to jump up, run in the kitchen, cut out one corner block, sew it together and attach it to the side borders. Then, I could go back to bed satisfied. You don't know what restraint it took to stop sewing at one corner!
One note - the corner D9P block is 6 inch and the quilt blocks are 7 inch. That is because there wasn't enough of the purple fabric to cut wider strips and still have enough for the binding. Glad it worked out.