International Orange (Aerospace) — International Orange (Aerospace) is a bright shade of reddish orange that is most instantly recognizable as the color used in the specific uniforms that NASA astronauts wear during the ascent and entry portions of any space flight. The color itself is a vivid orange shade that’s a little bit darker than the suits typically used for high-altitude flights—although the first plane to break the sound barrier was also painted this specific shade of orange.