Haven't done it with a quilt but did use the "wrong side" when I made the dress that I wore to my daughters wedding. The colors were much softer!

Thank you for the laugh - couldn't have said it better.

"you pay for both sides of the fabric-"

My thoughts exactly ~ Your quilt. Do what you like best. Just be sure to shows us the finished quilt :)

My quilt teacher told us to always consider using the reverse side of fabric. I've not done it, but apparently she has.

my avatar was made with the fronts and backs of the fabrics to give me the right colorways but different values for the background

Some Stack-n-Whacks require you too. I made a butterfly stack n whack quilt and the reverse of the fabric made the wings look like they had movement to them...

I buy both sides :wink: and I will use them both :D:D:D
Sometimes they just work better, especially if your block calls for shading, they blend well together :D:D:D

Oh yes! I did use the reverse side of a beautiful red rose pattern fabric on a quilt for the same reasons you stated. No one knew the difference and the finished quilt was much prettier than if it had that bright red side showing to distract from the rest of the pattern.

The "right" side is the side you like best

SOME OF THE JEAN MATERIAL THAT I CUT FOR A RAG QUILT WAS PETTIER ON THE REVERSE SIDE AND MY DD LIKED IT SO WE CALLED IT THE FLIP FLOP JEAN QUILT.BARB