Color icon for color copper.  Clockwise from top left: 
<ul><li>#B87333 Copper</li>
<li>#AD6F69 Copper penny</li>
<li>#CB6D51 Copper red</li>
<li>#DA8A67 Copper (Crayola)</li></ul>
<a href="//commons.wikimedia.org/wiki/User:PKM" title="User:PKM">PKM</a>
<span class="int-own-work" lang="en">Own work</span>