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 Love Is Made Of three minutes and fifty-five seconds (3:55), "What Love Is Made Of" is an uptempo dance and house track that has been described as "rave-y" and "trance-y". Its instrumentation contains the sounds of pianos and synthesizers. Jordan Sargent of "Spin" observed that it continued the musical style first introduced in Katy's 2012 extended play (EP), "Danger EP", which was "straight-forward house". Idolator's Sam Lansky compared her performance in the song to recording artist Siobhán Donaghy. Critical response to "What Love Is Made Of" was generally positive: most critics noted Katy's vocal performance and commended its sound. Siân Rowe from "NME" was