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
What Is and What Should Never Be descending riff [of "What Is and What Should Never Be"] is amazing: It's like a bow is being drawn back, and then it releases. The rhythm of the vocals is almost like a rap. It's insane — one of their most psychedelic songs." This was also one of the first songs recorded by the band for which Robert Plant received writing credit. According to rock journalist Stephen Davis, the author of the Led Zeppelin biography "Hammer of the Gods: The Led Zeppelin Saga", the lyrics for this song reflect a romance Plant had with his wife's younger sister. "What Is