The bumper mouldings are black on 2 door, body color on the 4 doors. More details here:
Rabbit 2 door:
Black Unit Reflex Silver United Gray (SOP 30 / 2006) Sage Green Shadow Blue Candy White Tornado Red
Rabbit 4 door:
Black Unit Reflex Silver United Gray (SOP 30 / 2006) Sage Green Shadow Blue Candy White Tornado Red