Blue is Italy's national sporting colour (that's why Italy's football team wear blue shirts)
White when they are playing a home game and red on a away game.
The home team status alternates between American Football Conference and National Football Conference teams each year. In Super Bowl XLVI, the New England Patriots of the AFC were the home team and elected to wear their blue jerseys. As a result, the New York Giants of the NFC were required to wear white jerseys as the visiting team. But if the Dallas Cowboys were the Super Bowl home team, they would choose to wear white jerseys because their custom is to wear that color for most home games. The Cowboys also wear white jerseys for road games whenever the host team does not wear white.
The kit is blue jersey, white shorts and red socks, recalling the colors of the french flag.
The French football and rugby team are called ZEE BLUES as they wear navy blue jerseys.
the seatle sehawks pro nfl football team is blue and green Çaykur Rize SK, Rize - Turkey (Bank Asya 1. League)
The England national team does not have permanents squad numbers in the same way that a club does. The first eleven wear 1 to 11 and the subs rise from there. At tournaments the team does have numbers but they differ from tournament to tournament.
The first international match of an english national team (in any sport) is a Rugby match between England and Scotland dated 1871. England choose to wear white because it was the color of the sporting activities at the Rugby school. When in 1872 the national football team made its first match, they inherited the color. Note that untill 1980's, England's kit was all white. Just in the 1980'a Admiral technical sponsor introduced a fancy design which added blue and red elements which could erroneously recall the colors of the U.K. Flag, but are an hommage to the colors of the badge of the Football Association.
They wear blue shirts with a yellow collar and white shirts. See the photo at the link below.
The New England Patriots, who are considered the home team for the title game at Lucas Oil Field in Indianapolis, have elected to wear their blue jerseys. As a result, the New York Giants will wear white.
England usually play in white shirts and black shorts as first choice, but their second color is red shirts and shorts as well.
Barcelona Football Club In The La Liga.