I've done mine...in epsom green to match the rest of the car / grille. You can see it on my profile pic.
I painted them while still fitted - took the wiper arms off & just masked around them.
Is that little strip grey out of the factory? I'm thinking of painting my grille/bumpers/little bits under the lights black but couldn't work out if they were grey originally or just faded.
You know what I love about the press photos? Even in them the light wipers aren't level.