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There is another recent thread on Engine Dress Up that shows a number of options.
You can get fuel rail and other panels that have been painted to match the color of your car, or get chrome/billet pieces, or just about what ever you want.
I think most folks either continue the theme of the color of the car, perhaps with some custom painted options, then add chrome features.
But it's your car. Mod her the way YOU want too, and enjoy it