a lot of different finishes can be done on a copper surface. (i.e. polished shiny, matte (soda/bead blasted), dimpled, including lots of different patina colors. It's also easily engraved (or stamped, or acid etched) and then those areas highlighted. I used to do bronze art work using the lost wax mold process, and would "experiment" with different patinas and finishes/colors.