Originally Posted by OldFedIsOld
Lead DOESN'T RUST, it's non ferrous(meaning it doesn't contain Fe2+ which is IRON). It can be oxidized when water or some sort of chemical strips electrons from it, but usually for things like lead pipes it happens at a very low rate.
The brown/ dark gray color is just discolorment from a source. Could be from sweat, could be from the glue under the grip.
I would suggest always covering lead tape with some sort of clear tape or something else, because its still lead and very poisonous to humans.
Again, im not asking if lead will RUST (no need for all caps, i get it).