Oh trust me--I will never wash a precut. I recently bought several Charms from Green Fairy for bags, but there's one line I'd love to make a quilt out of--so I bought some yardage. I'm not washing it--since the Charms aren't washed, but the solid I will use to accent is washed. And with the bags--I often add a washed piece from stash for the inside or bottom--the rest is Charms. And the Charms I don't use for bags will go in Tummy Time Chunk quilts--all the rest is washed scraps. So---I went ahead and mixed them--didn't think it could be a huge issue. I don't buy/use Charms that are bold colors. Thanks for the good news. :-)