Momtomoandjo - I have read (somewhere on this board), that if you take a picture of your fabrics in black and white, you will be able to see the values of each fabric and decide if its a light, medium, or dark. I have found that some bright colors actually have a dark value. Also, some fabrics I think are light, are actually medium value when I see it against my other fabrics in a black and white photo. Hope this makes sense.