I've been asked a few times why the super heroes in Victory Girl all seem to have a specific colour running through their costumes.
It's all down to which sector they are posted to.
During the Cold War, when the UN started deploying Geneva Sanctioned Independents (GSIs/Super Heroes) around the world, they wanted to ensure that there was an even distribution of abilities/super-powers so as to avoid a rise in tensions between the likes of the USA and USSR.
They accomplished this by dividing the map into sectors to which GSIs were posted and from which they were not permitted to stray without authorisation.
After 1989, a revised “soft border” approach was taken to sector monitoring, with GSIs now permitted to travel freely between neighbouring sectors, assisting where needed.
The only regions of the globe that are not covered by GSI sectors are the commonwealth nations that declined to sign the 1955 Pantheon Treaty – Canada, Australia, India and Britain itself.
These are designated GSI no-fly zones by their respective governments, who each maintain an “Office of Dangerous Anomalies” within their security services to deal with situations in which a “super hero” would be of use.
(Edit: don't read too much into the pseudo-politics I'm playing with here. It's just a basic backdrop to a piece of fiction.)