Seconding what Ekuw said, thimbleberries in general work very well with civil war fabrics/designs.
One of my small group ladies just finished (last stitch last week!) a hand quilted scrappy civil war fabric quilt. She had 9-patches inside a churn dash, with dark triangles at the edges, it came out lovely. Problem is with your collection would be the triangles, but maybe you have something to use for them.