"In the battle of the third floor, Lee's character makes use of a green bamboo whip. The whip represents flexibility, an attribute which Lee felt a martial artist must possess if he was to be successful in combat. Since combat, like Life, Is not predictable, Lee held that one must possess a pliable adaptability in order to change with change. Lee has his character dressed in a one-piece yellow track suit to symbolize no affiliation with any known martial arts style."
January 1, 1970
https://en.wikiquote.org/wiki/Bruce_Lee%3A_A_Warrior's_Journey