As far as the cosmetics are concerned, have you guys tried bleaching them in simple hydrogen peroxide that you get from the grocery store or pharmacy? My buckhorn ferrule blanks came out much whiter after a 48 soak - I changed out the peroxide with fresh after 24 hours. I haven't turned any down yet, so I'm not sure how deep they got bleached, but I can bleach them again before installation if that becomes a problem. That low grade peroxide doesn't seem to eat up the surface.
Just a thought
Gary
Just a thought
Gary