I have a Siren Red with ACC and plasti dipped the top and bottom grills, but not the chrome trim around the sides and bottoms. I left that for an accent. It does not mess up the ACC or bumper sensors from my experience. However, I did not like the top grill area where the ACC radar is located being black also, so I pealed off the dip, and found it more pleasing to my eye. PM me with your email and I'll send you pictures, then you can decide.
I also black accented my wheels and that really makes them pop. I have a picture showing the front done and the rear unpainted. I did then with paint, not dip.