I promised Quilt Art list that I would post the results of my discharging tests. Here they are:

The top two samples were done on a heavier fabric which might be a cotton/linen blend meant for Sashiko. The Softscrub and the discharge paste did not penetrate the fabric as easily. Also, the colors are a little browner in the top sample than what I scanned. The second fabric is a little yellower. I don’t know why the true colors would not scan as the others are almost spot on.