ECS has Yellow bulbs from Ziza.
What I did on my E92 335i was put the yellow bulbs in, then yellow Lamin-X film over it just to protect it from rock chips and such. I've had some experiences with almost all my foglights on all my cars cracking from road debris...
07 SG 335i
COBB - Burger Motorsports - Evolution Racewerks - TiAL