If you want it now here are two methods to do green and brown patinas on copper.
Copper patina solution. Oxidation is why iron eventually rusts and why copper turns green. Barrys Restore It All Products - Copper Patina Rescue Small Area Touch-Up Kit The 1 All-in-ONE Copper Patina Restoration KIT. Copper Patina Solution Old World Offers Pre-Patina Services for All Copper Products.
A patina is a surface coating on metal that is formed by a chemical reaction. FREE Shipping by Amazon. Copper roofs which have weathered for six months or more should have the oxide film removed before the coloring operations start.
Bottled Patinas can only ship via UPS Ground in the United States. A dry environment will hamper. Here are the patina recipes covered.
To achieve a green patina spray your copper with a mix of 2 cups vinegar 15 cups ammonia and 12 cup of salt. After the sanding was finished up I moved on to giving all of the sheets a good washing with soap and water to get all of the grit grime and oils off. Covers 250-300 Square Feet Per Gallon Produces a Beautiful Blue-Green Patina on New and Old Copper Brass and Bronze.
Wash solution over metal surface let dry then wash. If using green patina solution reduce salt content to reduce intensity of green. Solution hot 180 to 190F metal hot 200F cold wash water applied after metal has cooled to around 100F.
Apply Dulux Copper Patina solution by brush or muslin in a random pattern. 99 6598Fl Oz Get it as soon as Wed Oct 6. A second coat can be applied if required.

