Thanks Wurger.
Interesting the Germans used black / schwartz as a color scheme for training. What I think I know is that Allied training planes favored yellow, orange, red, and aluminum dope color schemes. But then again, there weren't enemy fighters wandering around the United States looking to shoot up anything that moved.
PS I thought the side code looked like BB+RJ. But I said to myself, naw, it can't be all letters, it just has to be numbers and letters. Wrong again.