Blue Is the Colour (song) of the Norwegian team Molde FK also use a variant of a song, where the title ("Blått er vår farge") directly translates to "Blue is our colour". The rest of the refrain is somehow altered, however. An adapted version called "Green is the Colour" is the official fight song of the Saskatchewan Roughriders of the Canadian Football League (Canadian football, not soccer.) This should not be confused with the Pink Floyd song "Green Is the Colour". The song was used as the basis for a campaign record used by the successful Conservative campaign in the 1979 general election. The song
Mineral the sample reflecting different colours as it is turned, while pleochroism describes the change in colour as light passes through a mineral in a different orientation. Iridescence is a variety of the play of colours where light scatters off a coating on the surface of crystal, cleavage planes, or off layers having minor gradations in chemistry. In contrast, the play of colours in opal is caused by light refracting from ordered microscopic silica spheres within its physical structure. Chatoyancy ("cat's eye") is the wavy banding of colour that is observed as the sample is rotated; asterism, a variety of chatoyancy,