I love it with the Kona Snow. It's my "go to" fabric for 30's repro. If you want something a bit creamier, you could go with Moda Bella Solids in Snow, but I love it as is once the black satin stitching is added. I think the black will be strong enough to separate the applique fabrics from the background. The only other option I could think of that could work would be one of the antiqued muslins (in the beige family) because you would have both a difference of color & texture.
Really, though, any option is really beautiful with those fabrics.
