Back in the day when I was doing theatrical costumes (high school, college, and community theatre -- sometimes at the same time) I often used the "wrong" side of a fabric for the "right" side. The same goes with quilting, in my opinion, because the back side often has a muted color and/or texture which I really, really like. Once your top is quilted, I doubt that anyone but you will notice. They will be drawn to the wonderful pattern and colorful quilt which you have created. I, for one, would leave it exactly as it is. Perhaps you might turn another piece -- or two, or three, or more -- so it looks deliberate.