Looking good, ive sprayed the front one on mine black and your right, they are alot of hassle, you'll probably find it easier popping up the front bumper, unclipping the grills at the front and then from there you will be able to get your hands in and just about undo the torx bolts that hold the diamond holder in place. Then that needs unclipping and the new one ofcourse will have to be bonded back in i'd assume if you have bought the streamline ones?
Love the look though, thinking about doing that myself now ive seen it again.