All the answers posted so far entail shielding devices which themselves will require paint to last very long under UV light bombardment. So with or without them, you will need a suitable primer and paint.
I recommend running a Scotchbrite pad down the wire or shield before priming, to give the material some microscopic "tooth" for the primer to lock into. Then a solvent based primer. Then an exterior rated paint of your choice.
If you want to match what you have on the house, find a way to remove something that is painted in that color, and the hardware store can match it with their scanner.