do you have something that is more neutral than the Blue? It's too contrasty/harsh for the rest of the quilt. If you had something similar in tone and color to the brown dotty fabric that you've used as the inner border on the second pic, but reads as a solid/near solid, you could use that for the border, it would provide enough contrast to frame the inner portion of the quilt and highlight the butterfly hankies without being jarring.
Rob