I suppose this is the time when some old sod/duffer (that is me) jumps in and that fog lights should not be pure white - well if that is correct then why don't they fit them with yellow covers like the French/Froggies used to do and fitting LED bulbs would just make them brighter.
Edit:- the trouble for most people is probably that these lights have become dual purpose lights so the horrible yellowish lights are seen when you are turning at slow speed!