Although I'm sewing down all of the "ribbons" that surround our happy hair-do lady, I'm leaving the edges of her green collar free to some extent.
Most of the quilting that is visible in her hair will, I guess, not be so visible once the solvy is washed away.
Right now the plan is to quilt the smaller ribbons in a similar color to the fabric, and to quilt the black background with a dark grey thread.