Silver-colored or OroRosso-colored? The rules used to state that mixing metals was something to avoid. But obviously Penarosa is all about self-expression and individuality. Regardless of your chosen style, it is comforting to know that the Penarosa-case is interchangeable, and may be changed easily according to your daily preferences.
You should match the glittering Penarosa-case with the metal color of your other accessories and jewelry. Or should you not? It is your choice.