The "green and gold jersey" refers to the iconic uniform worn by the Australian national rugby team, known as the Wallabies. The colors green and gold are derived from Australia's national floral emblem, the golden wattle, symbolizing the country's identity and pride in international sports. In addition to rugby, the green and gold colors are also used by other Australian national teams, including those in cricket and soccer. This color scheme represents unity and is a source of national pride during international competitions, showcasing Australia's spirit and competitive nature.