OEM Audi RS4 Taillights
(appear red, but flash amber)

Pic of Stock lights flashing Red:
dsc04186.jpg

RS4/Euro Taillights:
dsc04193.jpg dsc04194.jpg dsc04196.jpg dsc04197.jpg

Driver's side Stock, Passenger's side RS4/Euro (showing red vs amber difference):
dsc04199.jpg dsc04201.jpg