Had a partner over the weekend for CYO 6th grade game. One team had black uniforms with red accents. This team had two black players and a black coach. He wanted to call them "Red" during the game. I told him to get real. Go with "Black shirts" if you have an issue.
I suppose this may be an issue for some people out in the world. Is there protocol in other parts of the officiating world? Non-white officials not wanting to call home team "White"?