The greens are lovely, especially the outer with the raspberry touches. I do think the idea of cornerstones of the pinks from the center of the quilt used in the borders would be just the thing to tie it together perfectly if you had enough left. If you only had small pieces left, how about a cornerstone in the outer border of a small 9P or D9P using the greens and pinks? I think the darker green for binding and green/pink for backing is perfect.