Currently we use two types of Bronze in our hardware. 

Our 'Warm' bronze is  darker and warmer in tone, and the other 'Bright' bronze is more golden and lighter in appearance. 

We have just added an all blackened bronze finish and an edge reveal blackened finish to the line up. While still working with our two bronzes, as mentioned above, we apply a patina to the metal to blacken it. Then we seal with a lacquer to prevent any damage on the finish.