Backup Sensors

[Sagan4862]

I’m in the process of swapping my rear bumper with an aftermarket one. I was looking to get black backup sensors to match. Through google the only OEM part i can find is a black bezel but not the senors themselves. I called the dealership and they said the only thing they can find is paint to match and that i can paint the ones i currently have. Before i go and mess anything up, can i paint the sensors and they’ll still work? If not where can i order black sensors from? 

Thanks