To your knowledge is it possible to do this with the commercially available liquid emulsions? To my knowledge (limited), all you do with Liquid Light and Ag-Plus is put it in a hot water bath to bring it from the gel state to a liquid and then you coat your substrate. I would assume that to mean that there is no surfactant or hardener in the coating process for these products. I guess I'm wondering if there is a broad dye that can be added directly to the heated liquid emulsion? What methods are there to check it you have the right amount of dye(s)?