Thanks for all your positive comments. Colour coding cost me ?200 at my local bodyshop, but I had to remove the parts. Yes, I prefer the bottom section of the bumper unpainted, looks less custom car IMO. I left the centre section of the front spoiler unpainted as well, to match. Just hope I don't spoil it when I put my RH Crossline 19s on, they arrive tomorrow. I'll post a photo once they're fitted.