If you want to watch a film of a battleship then it usually is in black and white. Although some of the footage from the old battleships is fantastic, you never really get a full appreciation of it due to it being in back and white. However, there is some colour footage starting to come through in recent years that enables us to see the full spectrum of life back then.
Check out this film of HMS Hood leaving Portsmouth in 1939 and yes it is in colour.
Well worth a watch