I just had some marks on a red piece even though I use the Shout Color Catchers. So back in the wash it went with just a small amount of detergent - just 2-3 TBSP. And the dark spots came out- luck??? So run it back through the wash and then use it- As quilters we look for tonals all the time, don't we? I am sure when you are done with it that we will all think it is beautiful. And if you don't remind us about the fabric, we may not notice at all.