Standard Colors
Paintball markers can fire white, blue, red, green or purple paintballs. However, any of these colors may be prohibited if a game referee deems it too difficult to see a particular color. For example, if players wear camouflage, paintball markers firing a green color may not leave a distinctive mark. Players must review the regulations at each paintball game to make sure the colors they intend to fire from the paintball markers are acceptable.
Designated Colors
A team may designate a color for all team members to fire. This helps determine whether a player gets hit by friendly fire. This can be important to teams because they may want to determine if any players are a liability. Players who shoot their own team members can cause the team to lose. A player who is hit by friendly fire must leave the playing field.
Splatter
If a paintball hits a nearby object and splatters onto a player, that player is out. The size of the splatter must be at least as large as a quarter. The referee makes this determination. Color comes into play during a dispute. If the shooter can show that the color fired by his marker belongs to him, he has a strong case for claiming he was firing at the player who got splattered.
Night Colors
Paintball games that occur at night may use glow-in-the-dark paintballs. Paintball markers can fire any color of this type of paintball. The purpose is to make hits visible in the dark so that the referee can tell if a player is out, or conduct a paint check. A paint check is when a player asks a referee to determine if he has been hit in a place he can̵7;t see. An opponent may also ask a referee to conduct a paint check on someone he has fired at. Glow-in-the-dark colors make paint checks much easier at night.
Colors and Rules Violations
Referees can resolve rules violations more easily with designated colors. If a player has been hit in a prohibited area, such as the face, a referee can check to see what player shoots the color that is on the face. This kind of safety violation can get a shooter ejected from the game, and the designated colors help determine who is committing the violation.