I have been making my own laundry soap for about a year now, and use it on light coloured clothes. (1 cup each of washing soda, borax and ground up bar soap, disolved in water till it is a gel when cooled like liquid laundry detergent). I like using it and have had good success. Mind you, the clothes are not heavily soiled. My question is can I use it on dark coloured clothes, or will it likely fade them? I currently use detergent specifically for dark colours on my dark clothes .