While a team's primary kit rarely undergoes major changes, the second colours tend to vary over time and sometimes by tournament. Some away kits are a modification of the home colours (for example a reversal of primary and secondary colours), other away kits are considerably different from home kits. Several club and national sides have favourite away colours which might remain the same more or less continuously. Often these are colours that were used in famous victories; for instance
Brazil (blue) and
A.C. Milan (white). Many professional clubs also have an official
third kit.
A.C. Milan chose to wear all-white in the
2007 UEFA Champions League final as they considered it their "lucky shirt" (). In some title-deciding matches, a team has won the game wearing its away kit, but changed to home shirts for the trophy presentation – most notably when
Spain won the
2010 World Cup final, changing from dark-blue away to red home shirts to lift the trophy. In some cases both teams have been forced to wear their second choice away kits; such as in some World Cup matches
(see section below). During the
1998-99 UEFA Champions League,
Manchester United had to wear their away colours in both of their group stage matches against
F.C. Barcelona, not just away at
Camp Nou but also home at
Old Trafford too due to a ruling by UEFA that in the event of a clash, the home team had to change their colours.
History in European football from
Athletic Bilbao (left) and
Lionel Messi from
FC Barcelona playing by choice in change kits in their respective
Basque and
Catalan regional flag colours (2014) In England in 1890,
the Football League, which had been formed two years earlier, ruled that no two member teams could register similar colours, so as to avoid clashes. This rule was later abandoned in favour of one stipulating that all teams must have a second set of shirts in a different colour available. Initially the home team was required to change colours in the event of a clash, but in 1921 the rule was amended to require the away team to change. In the event of a colour clash, the away team must change to a different colour. Away kits were often worn by both teams in English
FA Cup matches. Until 1989–90, its competition rules stated: "Where the colours of the two competing clubs are similar, both clubs must change unless alternative arrangements are mutually agreed by the competing clubs". Clubs sometimes needed to find makeshift
third kits for their players. Many FA Cup finals were played under these rules, the last being the
1982 final and its replay. In European competition, the
1968 European Cup final was played under similar rules. The old FA Cup rules, with almost identical wording, are still used in semis and finals by many county and district football associations in England.
FIFA World Cup 's away jersey worn in the
1966 World Cup final Three teams have won the
FIFA World Cup final in their away colours – in
1958 (Brazil),
1966 (England), and
2010 (Spain); though England was the home team for the 1966 tournament and Brazil was the home team for the 1958 final. This is most likely to happen in
World Cup matches with large numbers of
black-and-white television viewers, so that the teams' kits also differ in tone (light and dark). World Cup teams often have to make changes that would be unlikely in domestic or untelevised games. In
1957 Scotland borrowed home team
Switzerland's white away shirts to avoid clashing on black-and-white television. In
1970 England and
Czechoslovakia were allowed to play in sky blue and white, respectively, which caused confusion for
black-and-white viewers and England manager
Alf Ramsey. England reverted to red away shirts against
West Germany. Netherlands and Brazil played their
1974 World Cup game in white and dark blue respectively, rather than their first choices of orange and yellow. FIFA's regulations for the 2014 World Cup mandate that "teams need to have two very distinguishable shirts – where one is a lighter colour and the other is a darker one". At the
2014 World Cup,
Croatia were allowed to wear red-and-white checked shirts, instead of blue, against
Brazil, only after Croatia appealed FIFA's original decision.
England were not allowed to wear red away shirts, and instead were made to wear white
against Uruguay, due to an apparent clash with
officials' uniforms. Before the 2014 tournament,
FIFA decreed that
Spain's all-red home kit and all-black away kit were not sufficient as they were both considered dark tones. FIFA forced Spain to produce an all-white
third kit. ==Australian rules football==