Blue Impulse for each aircraft: white, red, blue, green and yellow and painted in silver, light blue, blue and pink; on the leader's aircraft, the blue is replaced by gold. Later, in 1961, all five aircraft received a special paint scheme of overall white with blue flashes. In 1964, Blue Impulse performed at the opening of the 1964 Summer Olympics in Tokyo, drawing the Olympic rings in the air with coloured smoke. In 1970, at the opening of Expo '70 in Osaka, the team drew "Expo '70" in the air. In February 1982, after 545 air demonstrations, Blue Impulse replaced the Sabres
Road signs in the United Kingdom patch may only be coloured blue or green. Signs indicating a temporary change, such as roadworks or route diversions, are denoted with a yellow background. Usually these signs use a simple black on yellow colour code, more complex signage use the conventional signs superimposed onto a yellow background. In some areas, such as the Dartmoor National Park, additional signs and colours are used to distinguish road conditions. In addition to the national colour schemes, the park also uses white signs with a light blue border and text to denote routes suitable for medium-sized vehicles and white signs with a brown