I usually use color-coordinated fabric for the backs of quilts I make. Sometimes I use up whatever fabric I have leftover from the front though, and make a reversible quilt. The only time I used a "white" backing was when I hand-pieced and quilted a Double Wedding Ring quilt for myself. I used bleached muslin in the piecing and the same in a wide backing for the back. Turned out beautiful! I used the quilt on my bed when I was a widow with kids all grown and gone. But when I got married again, it went to live on a quilt rack. I am just too nervous that it will get stained or something. With my new husband came a cat that likes to sleep on our bed... :?