My father's RX-8 has a silver body with blue accents, but the blue plating on the wheel nuts was starting to peel, so I bought this as a Father's Day present.
The subdued gunmetal finish of the end caps is not too bold and has been well-received for its effectiveness in preventing wheel theft.
I think gunmetal parts are a great option.

● Miyagi Prefecture Hachirota (RX-8 / SE)