Those are just blanking plates Mark, my bumper has them as well :oops:

DSC_1449 by Matt Worthington, on Flickr

SMD Conversion (18) by Matt Worthington, on Flickr
Middle front is the interior light, ones either side are the map lights, and the middle rear (red on mine) is what you use to turn the interior alarm sensors off for when you lock the car (if there is a dog inside, or you leave the window down a notch).