WWI German 'Naval Hex' Printed Linen (Clear Decal Paper) Following the official 1916 directive for German naval aircraft - three hexagons of 'grey blue, grey brown, grey violet' - we have achieved a balance of those three colours resulting in a satisfyingly 'English Channel' palette for both painted and later printed linen effects. For early pre-1917 machines use painted, for later use all printed linen (use a cream undercoat for 'solid' surfaces) or possibly linen flying surfaces and painted plywood. Both combinations give that '2 tone' effect often seen in photos...