Malachite green metabolized into LMG. Only the cation MG is deeply colored, whereas the leuco and alcohol derivatives are not. This difference arises because only the cationic form has extended pi-delocalization, which allows the molecule to absorb visible light. The leuco form of malachite green was first prepared by Hermann Fischer in 1877 by condensing benzaldehyde and dimethylaniline in the molecular ratio 1:2 in the presence of sulfuric acid. Malachite green is traditionally used as a dye. Kilotonnes of MG and related triarylmethane dyes are produced annually for this purpose. MG is active against the oomycete "Saprolegnia", which infects fish eggs 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