Rank in Judo applied to juniors below the age of 15 due to safety reasons. In Israel the following belt colors exist: Brazilian belt rankings are normally white, blue, yellow, orange, green, purple, brown and black (6th, 7th, and 8th dan may wear alternating red and white panels, and 9th and 10th dan holders may wear solid red belts). Additionally, a grey belt may be given to very young judoka (under 11 or 13 years old) just before the blue. Sometimes, competitors are organized into two categories depending on grading; the first is from white to green, and the second is purple through
Orange (colour) series, wear orange swimsuits to make them stand out. Orange astronaut suits have the highest visibility in space, or against blue sea. An aircraft's two types of "black box," or flight data recorder and cockpit voice recorder, are actually bright orange, so they can be found more easily. In some cars, connectors related to safety systems, such as the airbag, may be coloured orange. The Golden Gate Bridge at the entrance of San Francisco Bay is painted international orange to make it more visible in the fog. Next to red, it is the colour most popular for extroverts, and as