Do an upgrade. I just got the Osram Xenarc CBI oem bulbs at The Retrofit Source. They are what is being put into 2013 BMWs, they are 5000k with more lumens, not less, and they are more white. They are really great.
'09 LCI 335i E90 in Oyster over BSM, 6 spd, Sport, Navigation, Individual Audiophile, Executive, Active Steering, JB4, BMS DCI, Euro Tails/Fog Light Switch, various painted and other OEM + mods, 19" M5 reps summer, 18" M6 GC reps winter.