The color or incrustation which age and wear give to (mainly metallic) objects; especially, the green rust which covers works of art such as ancient bronzes, coins and medals.
A green colour, tinted with grey, like that of bronze patina.
“We'll paint the ceiling a golden color, lightly rag on some of our green stain to give it a patina of age, and then we'll go to work on the woodwork.”
“The rusted patina makes it look like it's naturally weathered from leaning against a water-stained concrete wall for years.”
“A sword, for example, has what looks like a transparent shiny patina over deep yellow, bronze-colored metal.”