You just pop the grilles out, so you dont have to tape it up, and paint the sensor.

My buddy painted it the exact silver of the xfire trim.

Any bodyshop could do a small peice like this for about $50.

It won't wash off.

I'll be honest and say that you guys are going REALLY too far about the hole.. Trust me, I've noticed it, but when your looking at the car, you don't really notice it whatsoever, unless you are totally examining it the grill up close, like you guys are doing from my pics. When your looking at the car, its the whole package that matters.. nobody is going to get up close and personal with my lower front grill. Its like one of those dings you get, that you can't ever see, unless you know exactly where/what to look at. Sure, your the owner, you know where that ding is. You know where that scratch or whatever is. But 99% of people won't ever notice it.