Hi, I've actually tried to use the leather dye on the wool to change it's color, and it doesn't take, at least not the yellow shearing used to back western saddles. I used a red alcohol based dye. The skin dyed beautifully. The shearing was red at first and then i squeezed the excess out and had red with yellow places, decided to wash it in my sink and when I was done I had a red hide with yellow wool. It doesn't take the black very well either. But I asked a hair dresser friend to try some of her dyes and they all worked quite well.