Thank you all for your reassurances and understanding. I went for it this morning--I said to myself "I believe in science, and I believe that the soap molecules will grab the dye molecules, and float off of my quilt as Vicki Welsh said they would." So I filled up the bathtub with too much Dawn and water as hot as I could get. The result was a bathroom full of suds, which I bucketed out to the shower stall. Then blue dye emerged, I emptied the water and refilled the tub...less blue dye. I left it for a couple of hours, and lo and behold, the bad spots were gone from the quilt! I rinsed it in the washing machine, and my quilt is beautiful. This list always helps!! Really so great!! Thank you, thank you, thank you!