This is the reason I use polyester black. It does not fade. Frankly, I like the sheen of poly. Hope none of those who are dyed-in-the-wool (pardon the pun)cotton promoters have had a heart attack by my comment! But I do think poly still has a place, even in a quilt. Only rarely have I had problems with the fabrics I buy at WM. Like everywhere, you have to look at the quality of what you select.