About this detail of the Tiger
This photo shows the fan compartment of the Bovington vehicle. The baffle plate is removed from around the fans. The hot water pipe, leading from the top of the radiator, is missing.
This photo was taken after restoration, but I saw the original colours. The overall colour of the walls, floor, ducts, baffle plates and torsion bars was a mid blue-grey. The restorers have used a darker colour.
The fans and ducts are made of a matt unpainted metal, and appear to be machined castings. The hubs have a bronze colour.
The radiator here is painted black, but this is not its wartime colour. The right-hand radiator was originally black, but this one on the left-hand side was blue-grey. This may have been an official scheme, or it may have been the whim of a factory worker.
All of the flexible pipes were made of a dark grey or black flexible material.
Later in the production run, it seems the use of blue-grey was stopped. Compartments were left in primer red.
[1] Survey of Tiger 250122, at Bovington museum, by David Byrden