brown patina by the ocean?

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Hi all, An architect asked for some suggestions for a project by the pacific ocean. He wants to clad(decoratively) parts of a high rise with a metal with a mottled brown(bronze) patina. I know that there are some stainless steels that do well around the salty air environment, but can you patina it to look like bronze? How about other materials like aluminum, copper, or actually bronze? Would they hold up in that environment? Once up access will be very limited and they will be outdoors.