Save your money. Lower your car.
If you paint the hood black: 1. People will think you got in a wreck, bought a black hood and couldn't afford to paint it, or 2. They'll think you got a black hood because you couldn't afford a CF one.
That's just my opinion.
BUT if you must, use vinyl like Millz said so it's not permanent. I guarantee you'll get sick of it and want to go back to silver.