Both the young girls on this quilt top have sweet but soiled little dresses.. mostly white. I've come to learn that on a painted fabric image, when shadows and soil are painted first, a simple 40 wt thread even when fairly densely quilted will not overpower the darker image underneath. I once changed threads to a darker value... much more work and I find without great benefit. I somewhat enjoy the resulting transparency that comes with this method. What do you think?