EDIT: I think I've just solved my problem....I've ordered a bottle of ColorTone Vintage Amber tint from StewMac....looks like what I want....but please, feel free to address my question below if you'd like! I'm wanting to tint clear nitro to get that modern Fender dark amber look....something like the pic below. Does anyone know what tints I would use in approximate ratios? I have on hand Amber, Burnt Sienna, Raw Sienna, Burnt Umber, Raw Umber and Van Dyke Brown. My attempts thus far have not been very good. Using only the amber tint does not work...it's not 'deep' enough, as if it's lacking some deeper brown hues in it. So does anyone mix their own or is everyone just buying the ReRanch stuff?...which I can't do because I'm in Canada.