Why one player in volleyball wears a different colour?

Question

In volleyball (court volleyball), why does one player on the team wear a different colour uniform to the rest of the team? For example when I watched Polland verse China, the Polish team were wearing red but one player was wearing blue.

Answer 1

She is the libero or defensive specialist. They come in to make the passing better in a game. They wear a a different colored jersey so the refs can tell who they are.  

Answer 2

they are called liberos and they come in for defense usually for both of the middle hitters in the front row... it makes your team a lot stronger defensively so you don't have to have huge guys in the back row who suck at passing

Answer 3

It's the libero. they are like a defensive specialist. Their job is to only play the back row. It is a position.

Here is information from wikipedia.

"The Libero

In 1998 the libero player was introduced internationally, the term meaning free in Italian is pronounced LEE-beh-ro (rather than lih-BEAR-oh); the NCAA introduced the libero in 2002.[15] The libero is a player specialized in defensive skills: the libero must wear a contrasting jersey color from his or her teammates and cannot block or attack the ball when it is entirely above net height. When the ball is not in play, the libero can replace any back-row player, without prior notice to the officials. This replacement does not count against the substitution limit each team is allowed per set, although the libero may be replaced only by the player whom they replaced. The libero may function as a setter only under certain restrictions. If she/he makes an overhand set, she/he must be standing behind (and not stepping on) the 3-meter line; otherwise, the ball cannot be attacked above the net in front of the 3-meter line. An underhand pass is allowed from any part of the court.

The libero is, generally, the most skilled defensive player on the team. There is also a libero tracking sheet, where the referees or officiating team must keep track of who the libero subs in and out for. There may only be one libero per set (game), although there may be a different libero in the beginning of any new set (game).

Furthermore, a libero is not allowed to serve, according to international rules, with the exception of the NCAA women's volleyball games, where a 2004 rule change allows the libero to serve, but only in a specific rotation. That is, the libero can only serve for one person, not for all of the people for whom she goes in. That rule change was also applied to high school play soon after."

Answer 4

The libero is a designated back-row player, intended to be used as a ball-control specialist/defensive specialist.  A libero is allowed to replace any player in the back row without counting as one of the teams limited substitutions. They don't have to stand on the sidelines and wait for the refs either, they can go in when the ball isn't in play.

Libero's cannot block, or attack from above the 10-foot line. Also, they can only serve for the same one person. There's only one libero per set or game.

Answer 5

Its the libero, they are made to wear a different color because then they are easier to spot going in and out for people in the back row and is easier to keep stats then trying to see a number.