Steve,
Eau-de-nil was normally used on rebuilds, during the War on vehicle engines. From the factory, different manufacturers used, black, grey, basic vehicle colour (ie olive drab, matt green, brown, etc.), etc.
Eddy,
If you are using the WOT6 engine, the starter and dynamo would have been 12 volt ones. Just a thought in case you were not aware, as Fords are usually thought of being 6 volt.
Richard