The Krypton Factor were set. The contestants, from 1986 onwards, all had their own corresponding colour, either red, green, yellow or blue. They wore their own clothes, apart from the Physical Ability round where the contestants wore track suits which were, in early series, red, burgundy, orange, green, black, light blue and dark blue. From 1986 onwards, the tracksuits were red, green, yellow and blue, and varied in design over the series that followed. The track suits changed to black with a coloured stripe from 1990 to 1993. For their own clothes, the contestants either wore a shirt/blouse, tie or a neckscarf of
Sky blue yellow in the middle". The sense of this colour may have been first used in 1585 in a book by Nicolas de Nicolay where he stated "the tulbant of the merchant must be "skie coloured"". Displayed at right is the web colour "sky blue". Celeste (, (, ) is the colloquial name for the pale turquoise blue colour associated with Italian bicycle manufacturer Bianchi S.p.A and sometimes known as "Bianchi Green". In Italian, as the name indicates (Celestial), it is an attempt to reproduce the colour of clear skies. In English, this colour may also be referred to as Italian