To dream of copper represents desire. Believing that you can't ever have something or noticing that something never works out for you. When you see copper in a dream it means that you are having desirous thoughts of attractive people, or material things that you don't believe you can ever really have.
Copper can also mean that you are putting your desires, fantasies, and interests before the needs of others. You care more about what you want then you do anything else including other people. Negatively, copper may be a sign that you would lie, cheat, or steal from someone else.
The reason copper color represents desire is because copper is close to gold in color, but unlike gold is worthless.
Example: A young man dreamed of being inside a copper industrial complex. In waking life he had an illness that he could never cure. He was spending all his money to try to find a cure, but never could no matter what he tried. He felt that his entire life was being wasted trying to find a cure to his illness.