I use vinagroon for all black orders, tried every available black dye with every possible configuration of finishes, all of them had rub off. Vinagroon is definately the way to go, cheap easy and no rub off, I just dip it let it dry, oil it with neetsfoot and then use leather balm with atom wax or Aussies. You can do a search if your unfamiliar with vinagroon, tons of threads on it here. I just get a 5 gallon bucket put about 3 gallons of white vinager in and then through in a bunch of steel wool and rusty nails, let it sit for a couple of weeks and its ready to go, just strain it to get out all the remaining steel wool bits, I leave the rusty nails in there and just keep freshening the batch up by adding a bottle of vinager whenever it starts getting low. Guarantee once you try it you'll never use black dye again.