White triangles plus a small border making all your blocks float in a sea of white. Then small rectangles in proportion with the couloir rectangle in block as scrappy all round then a dark border or binding,.

I just spotted a version of your quilt made by TLAMBING post 2849 in Scrappy Quilt Show Right Here. Isn't it gorgeous! Thought you might like seeing how it looks with dark setting triangles. I also love how she added Prairie Points.

That's gorgeous!

I would use black and since you have white smashing I would have a whit binding
Nancy, CA

I would use black and since you have white smashing I would have a whit binding. Put it next to it and see if it works if not try something else.
Nancy, CA