There are many techniques and products to create the look
of Verdigris. This is one of my favorites because it is easy, works on any surface
and is long lasting, even on outdoor furnishings. Annie Sloan Chalk Paint, in this order:
One coat of each, leaving spots where other colors show through.
*2. Primer Red
3. Duck Egg Blue
Can be topcoated with polyurethane (Do not use wax for anything left outdoors).
*Primer Red: Optional. Use to give look of rust.
For a different verdigris on an outdoor light see my post Patina and Verdigris,