I grouped like colors together so you could see the subtle differences. I happen to have 9 quart jars, and so I do 9 experiments at a time. I'm still working out just how much dye to put in each jar - I'm using less than 1/8 teaspoon of dye. This time, I rinsed out each skein, then used the washer to wash with Dharma Trading Company's version of Synthropol and put all the skeins in the dryer. Much easier for me, and I didn't seem to get any color contamination.