Yellow, red and slight bit of blue make copper.
Copper
It is an alloy of Copper and Nickel metal. It is mostly copper surrounded by a thin layer of Nickel to keep the silver color that we are accoustumed to.
THE Liberty's face was copper color (color of a penny)
When copper carbonate is heated, it changes from its green color to black copper oxide.
copper is an element, you cant make copper
The color of a copper patch applied to a metal coupling would typically be a reddish-brown, similar to the natural color of copper.
Copper changes color to green either because of the weather or a physical change
Copper takes on a brownish color, I've used copper dust in chem that was greenish-blue, that's a pretty popular color. when copper is burnt it produces a green flame, I've also used copper that was gray and greenish-blue in non manufactured copper things I'd look for a bluish green color.
Copper is different from other metals because of its color, which is a bright blend of red and orange. It is also one of the best conductors, and is relatively inexpensive.
The color of copper mineral is typically reddish-brown or metallic brown.
Copper typically has a streak color that appears reddish-brown. This streak color can be seen when copper is scratched on a streak plate to leave a mark.
Copper can be changed to a different color through a process called patination, which involves applying chemicals or heat to create a new color on the surface of the copper.