The Red Team Wins
Voltageaav writes "Recent studies indicate that in both First Person Shooters and even athletic competitions, wearing red gives you an advantage. It's speculated that this distracts the other team slightly due to the psychological aspect of people turning red when angry." Of course the Blue Team loses — as evidence I submit the history of the Detroit Lions.
I'm in a corp in Eve Online, a heavy player v player orientated spaceship game.
With Eve, a hostile ship that is attacking you is displayed on screen, and also on the overview as a flashing red bar - the flashing red showing that the enemy ship has you targeted and is activating modules upon you with hostile intent.
One of the first things we do with newcomers to our corp/Eve is tell them to change the overview colour of a hostile ship from a flashing red to a solid green.
The change has had noticable effect. Before people would see the red and get an adrenaline boost, often resulting in them freezing for long enough to lose the battle. When seeing a solid green stating a metaphorical 'go go go!' as opposed to a red screaming 'Danger!' the newcomers perform better and freeze less often.
The fine article is a little light on details, only mentioning Unreal Tournament, but in Team Fortress 2 there is a good reason red win more (bottom chart in parents link).
In any of the Attack / Defend maps blue plays the attackers, and red plays the defenders.
To keep things fair the attackers respawn a lot quicker than the defenders (since the attacker has to respawn and run halfway across the map, while the defender usually respawns only a short walk from the final defence point).
Since waiting 10 to 20 seconds to respawn is pretty boring a lot of servers reduce the respawn rate, this gives a major advantage to the defenders (red).
So why do red have a slight advantage in other TF2 maps? After someone has played TF2 many hours, they'll realise that they generally win more as red, they may not analyse why they win more, but the end result is players with a lot of TF2 experience tend to join the red team without really thinking about it.
Personally I think Tribes 2 did it right, the enemy always is red.
...if you are my opponent in Day Of Defeat (I'll keep the camo) ;-)
C - the footgun of programming languages