What about the black swirl fabric, I made a quilt out of Lovely, and used the large pansies with white background on the back, it I don't like the look too much, The pansies with the black background would have looked better. Also did you know you can get the fabric you want at petermichaelfabrics.com for $5.95 a yard (310)314-8470 S&H may be a bit higher but this price is $4 to $5 less per yard.
Your quilt is beautiful.