Why do some junior officials wear green wristbands, socks or lanyards?

Various sports use green wrist bands, green socks or green lanyards to show that an official is under 18. Play by the Rules says these act as a check on sideline behaviour, reminding people to act respectfully towards children and young people who are learning the craft of officiating. Clubs are encouraged to protect under-18 officials from abuse.

Source: Play by the Rules, Sideline Behaviour (May 2025).