Well I got my BumperPlugs. However, they are much wider than the holes that were drilled through my bumper, meaning that to install them I'll have to drill bigger holes. I don't really want to do that since in CA the cops can tell me to get another license plate, and if my holes are bigger then I'm screwed. Actually I'm unscrewed because I won't be able to screw the holder back in.
However, for those brave enough to drill away, the colour of the black is quite a good match. I might get a sticker and put it over the area where the holes are. I wonder what . . .