I polished my brother in laws black 328i this weekend with LC orange pads and UC followed by Menzerna 3800 on a white LC. I rinsed the pads in the sink with some dawn dish soap to get rid of most of the product in them and threw them in the wash machine (free and clear detergent) with my other microfibers and the megs yellow foam wax pads I used to apply wax to the areas I couldn`t reach with the DA. When I pulled them out of the wash machine, the white pads are now yellow! The foam still feels the same just incredibly yellowed. Is this common for the white pads to turn yellow like that? They were previously used pads a friend gave me both 5.5 and 3". Do I need to worry about them at all or are they fine just discolored? is washing the pads with the towels a no no?