Marcos Maniacs

I just pulled the engine (Ford Essex V6) and transmission from my car 
3M 5463.  Although someone painted the top of the engine Ford blue, 
the rest of the block (and under the "new" blue) is black. Can anyone 
tell me if the V6 engines left Marcos all black? Or, because of the 
history of this car, is it black based on the fact that this was a 
replacement engine from Ford of England immediately after it was 
delivered to the U.S.?
Thanks,
Hampton Peterson