Mineral Examples of such minerals are malachite (green) and azurite (blue). In contrast, allochromatic elements in minerals are present in trace amounts as impurities. An example of such a mineral would be the ruby and sapphire varieties of the mineral corundum. The colours of pseudochromatic minerals are the result of interference of light waves. Examples include labradorite and bornite. In addition to simple body colour, minerals can have various other distinctive optical properties, such as play of colours, asterism, chatoyancy, iridescence, tarnish, and pleochroism. Several of these properties involve variability in colour. Play of colour, such as in opal, results in
Blue Is the Colour (song) became a hit in Australia. In 1978, the song was re-recorded as "White Is The Colour" for the Vancouver Whitecaps FC and became a local hit. The Scottish rock duo The Proclaimers re-recorded "White Is The Colour" for the Whitecaps' 2002 season, and performed it live during half-time of a game. Since the club's move to the MLS in 2011, it has been the entrance song for every home game at BC Place. The song has been modified into Danish by Flemming Anthony into the title "Rød-hvide farver" (Red and white colours). The song was the official supporter's song for