In order to create a shade, you add black (a darker color) to a color (orange), and in order to create a tint you add white (a lighter to color) to a color.
Copper can be made by mixing a darker color with orange. WHICH MAKES IT STILL ORANGE.
It is orange, the excuse of "its just a shade" doesn't rly work. Yes it is labeled as a different color, but that doesn't mean you can't call it it's base color, if you can't that's honestly stupid cause there's a shit ton of shades and tints of other colors AND WE STILL CALL THEM THEIR BASE COLOR. For example see my image attached to this comment. We have a shit ton of tints and shades of blue, but we don't call them exactly their exact color during a casual conversation or even a somewhat formal one. We just call them Blue, Cyan, etc... whichever color that's common that's closest (Cyan is a tint of Blue, cyan is still Blue).
In short, tints and shades of a color can still be called their original color. So copper is orange/can be called orange.
You can call black the darkest shade of Orange, the darkest shade of Red, the darkest shade of Pink. It doesn't matter. But you could save yourself the trouble and just call it by it's most common name. Same with White, you can call it the lightest tint of Red, Pink, Blue, Green, etc..
My final verdict:
imgflip.com/i/56nl9p