Color Catching Laundry Sheets

I liked the sheets. When I took them out of the washer, you could see that they picked up color from the water. But if they can pick up color that bleeds out of clothes, can they also grab it not only from the water but also dull the clothes?

These are amazing. They catch all the extra dye that you have in your washing machine. If you accidentally leave a dark sock in the white the white still stay nice.