Rank in Judo judo association. For a rank to be recognized, it must be registered with the national judo organization or the Kōdōkan. In Japan, the use of belt colors is related to the age of the student. Some clubs will only have black and white, others will include a brown belt for advanced kyū grades and at the elementary school level it is common to see a green belt for intermediate levels. In Europe the belt system is white, yellow, orange, green, blue, brown and black for both senior and junior practitioners. Judokas who have attained the 6th Dan may also use
Orange (colour) signal fire, historically used at night while smoke was used during the day, to communicate with distant army units. In the Indonesian Air Force, the Air force infantry and special forces corps known as Paskhas uses Orange as their beret colour. Several corporate brands use orange, such as Blogger, Fanta, FedEx, GlaxoSmithKline, Gulf, Hankook, Harley-Davidson, ING, Jägermeister, Nickelodeon, Orange, the Women's National Basketball Association, The Home Depot and TNT. Orange, because of its common association with activity and visibility, is a popular colour for sports teams. Orange (colour) Orange is the colour between yellow and red on the spectrum of