Some examples of the heavy flame dampers on Nachtjagd Bf 110s for modellers. I recall reading somewhere that they may have been painted in a special heat resistant (black) paint (?) as at Hendon (below) but one modeller convinced me that there were examples of the flame dampers in light blue-grey with his take on a couple of Eduard Bf 110 builds. Some screen grabs from the Fritzlar colour footage below..