I used a slightly different coloring technique with these. I painted them with espresso paint thinned a little with pink to lighten it and add texture. I then inked in the embossed letters with an ink pen, then washed over it with an aquabrush to soften the ink and make it look more like tarnish. It looks a lot like old metal in real life.
I still can't seem to get my letters straight, but I think it adds to the charm. These are for a mingle, but I would do this again to make embellishments.