I have a single Triumph leather and waxed cotton pannier, the cover is leather and the basic bottom of the bag is waxed cotton. I want to do a color change. I have some SEM color coat, a fabric & leather dye used for automotive interiors, in the color I want the bag to be. Now, I am confident I can recolor the leather part of the bag with the SEM, I've used it many times before on leather. Wondering if anyone here knows if the SEM will adhere to the waxed cotton part of the bag.