Dyeing leather: I just watched a video from Tandy Leather. The video was on how to dye leather. The guy opens a one-quart bottle of black leather dye, then he opens a small jar. You can see where this is going as he tilts the bottle: the dye runs down it, spilling all over the table, and some goes into the jar. There was enough dye on the table to dye the piece of leather about five times. Then the acid brush application.
Well, at least he had gloves on. The instructional video should have been titled Why You Need to Wear Gloves When Dying Leather.