[Nemesis]

paint brushes are items that change the adopt image. usually a color so if you had a red bunny and used a yellow paintbrush you get a yellow bunny.

however since it just swaps the image paintbrushes can be used more creatively like say you have an eevee and a user buys a blue stone item with the class of paintbrush so when used on eevee is swaps the image to its blue evolved form vaporeon.