Can someone with experience describe the theory and process to discolor and age a leather jacket with rubbing alcohol? especially the black leather. My understanding is the alcohol draws out the dye, but here's the question, if it's a dyed through black leather, then what's left would be white, if it's a brown leather dyed superficially, then it's easy to imagine. What I don't understand is how a dyed through black jacket could turn brown too? For example, the wardrobe people of Terminator II aged the black Bates jacket, and made some of them brown, but the leather was a through and through black cowhide. Thank you!