Guild Wars 2

first thing, i m a newbe of WvW, so i dont know if someone already said this before.

is it possible to give 1 color to a server? sometimes i hear commander mystakes for colors cuz every week they change.

It has to change each week, else how would 3 green servers fight each other ? And a lot of players seem to be complaining about not getting a certain color to make their map completion easier.

open your invetory and looks how many color you have to choose
thats what i mean. each server own color.