Why do bulls wear green uniforms?

Not only the new york Knicks, but also the Bulls have a set of such green uniforms, which are only worn on a western festival every year. This western festival is St. Patrick's Day, which is held on March 17 every year to commemorate St. Patrick, the patron saint of Ireland. This festival originated in Ireland in the late 5th century and has now become Ireland's national day. With Irish descendants all over the world, St. Patrick's Day has gradually become a holiday in some countries. Because there are a large number of Irish immigrants and descendants in the eastern part of the United States, the United States began to celebrate this festival from March 1737 17.