No particular reason except that most all personnel performing law enforcement and jailer-type duties wear uniforms.
JailBait - 2011 Funniest Prison Extraction Video 1-2 was released on: USA: 2011
If the uniforms are not similar or the same color, they don't have to change uniforms. If the uniforms are similar, then it is customary that the away team will have to change the uniform. The home team can tell the other team if they are the ones that are going to change the uniform if they want to. If the uniforms are not the same, then both teams can use whichever uniform they like the away or the home uniform.
Traditionally it is the home team who decides the uniforms but there have been exceptions.
The primary color of the basketball home team's uniforms is blue.
The lakers basketball team
The Negro League Baseball Team who had the initials BB on their uniforms were the Birmingham Black Barons
Andy Reid
NO!
Oregan
For team uniforms and other gear, I recommend the websites for Varsity, GTM Sportswear, and 'Cheerleading'.
The players get new uniforms for each game!
Uniforms were important because they defended each team or country from one another.