Thank you all! I too have always trusted Kona and will order some of their red today. I don't know why I didn't think about using the Retayne. I guess it's because when using it in the past it was only with fabric that I dyed myself. However, I am still going toss the red as I will never trust using it.
I used to wash all of my fabrics before putting it in my stash. I stopped pre-washing when I started using fabrics from my stash with precuts as I didn't want some of the fabric to be pre-shrunk and the rest not. I was afraid that the fabric that hadn't been pre-shrunk would end up looking different (bunched up) in the quilt once it quilted and then washed. I still do, however, wash the fabric in my stash, especially the older darker colors, before using it.
Thanks again!