This colorwash is made with multicolor floral prints. That is the selection of fabrics I started with in 1990 when I made the first colorwash quilt. Over the years of being the buyer for 2 stores and teaching this method of designing many times, I accumulated a pretty large selection of the floral fabrics.
I store my squares in the disposable aluminum cookie sheets which stack very nicely. I can get 25 trays stacked inside a blanket storage box.