I just read today that the seams are pressed to the darker material, unless they just want to be pressed the other direction. The reason is so that the batting does not come through the stitches to the front of the quilt during construction and use. Sounds sensible to me. Was reading an old quilting basics book while I was siting for 4 hours with an alzhimers patient. Do this every Thursday so his wife gets a break. The book was the first one I ever bought, "Quilters Complete Guide", by Fons and Porter. Very good information.