Anyone painted rear bumper aero kit black?

[SoCal_M3]

I have a 2010 Silver X5 35d. I bought a tow kit and painted it silver but haven't mounted it yet. When I showed a silver E70 to my wife that was on the road, she hated the way the body colored tow kit broke up the black bumper. We both happen to like the black bumpers.

That led us to a thought. What if we painted the rear aero kit matte black to complement the rear bumper?

I plan on doing the tow kit and I like the way the aero kit covers up the unsightly hole created on the OEM bumper to accomodate the tow hitch.

Pictures would be great if anyone has them.

Thanks.