This leaf uses a dark burgundy thread and this colour is repeated in one of the "rails" though it appears to be more blue-purple in the first photo..
I am going to try something different for the backing, or at least different for me. I have chosen a wide backing fabric self-patterned with scrolly stems and leaves . I am going to use this pattern as my hand-quilting lines and so am going to do the quilting from the back side.of the quilt for a nice all over curved stitching. It is going to be an interesting experience !