Verdigris: the common name for a green pigment obtained through the application of acetic acid to copper plates or the natural patina formed when copper, brass, or bronze is weathered and exposed to air or seawater over a period of time.
This board has lots of DIY painted furniture examples, and other unusual painted items. Also lots of tips and how-tos on painting furniture, floors, rugs, etc. like this faux silver leaf finish tutorial. Done with pieces of aluminum foil.