In CA, you can have a white or amber flashing light in front and an amber or red flashing light in the rear. The rear lens can be clear, but the bulb must be amber or red. Many DOT spec. BMW's have come with clear euro lenses and amber bulbs.
Sec. 24953 CVC, in case you were wondering... __________________ 
1995 318ti Base - Cosmosschwarz/Sandgrau R.I.P.
1997 318ti Active - Alpinweiß III/Sandgrau
2013 328i Coupe - Le Mans Blau |