I am just about to starat quilting my very first customer quilt and the thread she chose was a very colorful varigated thread that looks beautiful with the fabrics in the quilt. the backing material is white and we are using a white bobbin thread. The back looks like a dot to dot......is that acceptable in the world of Long Arm Quilting? I think it looks cool, you don't see stitches on the back, just colorful dots.