Fokker Dr.I 425/17. The entire machine is painted red, except for the white rudder. (picture source: Inside the victories of Manfred von richthofen - Volume 2, James F. Miller, Aeronaut Books, 2016)
Fokker Dr.I 425/17 at Lechelle, March 1918. (picture source: Inside the victories of Manfred von richthofen - Volume 2, James F. Miller, Aeronaut Books, 2016)