I think I would use a darker sashing to accent the blocks. As for the border and binding, I would probably use two or three fabrics, with the outer being the dark. Maybe about an inch or even 1/2 in inner border of the dark to frame the blocks, then one of the fabrics (or a coordinating one) from the quilt, then back to the darker and bind with the darker. Just a thought.
I audition borders and sometimes sashings as well.
Whatever you do, I am sure it will work out great Henry; your quilts are always very nice.