A friend gave me a partially quilted quilt if I wanted to finish it. Otherwise donate it somewhere because she couldn't stand it any more. I tried. Got to certain points and couldn't make myself complete it either. It's sitting in the closet for one of those days when I have nothing else to work on. Otherwise it will get donated somewhere. Don't sweat it. It's a live and learn situation. I've not done a mystery quilt but I'm surprised that they didn't tell you which fabrics would be dominant. Maybe I'm just uneducated on mystery quilts????