Hi
When my fog lights were fitted the rings wouldn't sit flush. I painted them with a rattle can but the paint chipped off on the roads of Norway. I decided to have it painted professionally. I added a splitter which has the fog light surround built in. (The splitter needs painting again after it was damaged getting it off a load loader - happening soon I hope)
The splitter is available to order but you need a long sit down when you see the price! £70 for a pair of rings looks cheap. It is an alternative though. Search "mgf front splitter m100"