I have mostly used a cream colored back, because I have usually hand quilted my quilts and the recipients of the quilts have been people who really love to see the quilting on the back as much as the pieced front. I have just recently made two quilts that I had machine quilted for me, one was reversable, exactly the same pattern on the front as the back, just different fabrics and the other had a coordinating fabric with the front of the quilt.