I spent yesterday using bleaches of all varieties on cotton...quite an interesting adventure. I did it all outside and only a few spilled spots of bleach on the deck. It is a true mystery what bleaches and what colors the fabrics turn. It depends on the colors of dyes used in creating the fabric and again, plenty of surprises! I will spend one more day at this and then see how they might fit into this art making...still loving this fall and winter exploration of fabric and sewing!