Aussie Matilda interior color

[Richard Farrant]

The silver paint is of a special type that does not harden as other paints do. This is to prevent flakes of paint bursting from the interior of the hull surface in the event of shellfire hitting the hull. The damage that hard flakes of paint can cause, can be imagined.
It could be that the silver paint was in short supply during the war and white was substituted. WW2 US armour is generally white inside.

Richard