They also won the EFL Cup that year and Sergio Agüero became the club's all time leading goalscorer. Guardiola then guided the club in 2018–19 to retain their Premier League and EFL Cup titles; the first time in Manchester City's history that the club had completed any successful title defence. The team then went on to also win the FA Cup and so complete an unprecedented treble of English domestic men's titles. On 14 February 2020, the club were banned from all UEFA club competitions for the 2020–21 and 2021–22 seasons and fined €30 million by the UEFA Club Financial Control Body due to breaches of the UEFA Financial Fair Play Regulations. However, the decision is pending appeal by Manchester City to the Court of Arbitration for Sport. L1 = Level 1 of the football league system; L2 = Level 2 of the football league system; L3 = Level 3 of the football league system. Manchester City's home colours are sky blue and white. Traditional away kit colours have been either maroon or (from the 1960s) red and black; however, in recent years several different colours have been used. The origins of the club's home colours are unclear, but there is evidence that the club has worn blue since 1892 or earlier. A booklet entitled "Famous Football Clubs – Manchester City" published in the 1940s indicates that West Gorton (St. Marks) originally played in scarlet and black, and reports dating from 1884 describe the team wearing black jerseys bearing a white cross, showing the club's origins as a church side. The red and black away colours used infrequently yet recurrently come from former assistant manager Malcolm Allison, who believed that adopting the colours of A.C. Milan would inspire City to glory. Allison's theory worked, with City winning the 1969 FA Cup Final, 1970 League Cup Final and the 1970 European Cup Winners' Cup Final in red and black stripes as opposed to the club's home kit of sky blue. City have previously worn three other badges on their shirts, prior to their current badge which was implemented in 2016. The first, introduced in 1970, was based on designs which had been used on official club documentation since the mid-1960s. It consisted of a circular badge which used the same shield as the current badge, inside a circle bearing the name of the club. In 1972, this was replaced by a variation which replaced the lower half of the shield with the red rose of Lancashire. On occasions when Manchester City played in a major cup final, the club wore shirts bearing a badge of the arms of the City of Manchester, as a symbol of pride in representing the city at a major event.