[US_GRANT]

Right and that is what you see all over the net about it, back in 1970 at a thunderbirds air show at Hanscom field
 Air Force bace Bedford mass USA we where told by the thunderbirds show narrator that the black rudder was in memory of the MIA's in Vietnam and this came from the thunderbirds narrator him self that day and I will always remember that as it had a deep meaning at the time as the Vietnam war was still going on.

Deutschmark

That may be what the narrator said, but he was wrong. This pic was taken from: Colors and Markings of the F-4E Phantom II Copyright 1989.