Traditionally speaking, civilian cockades should be made up of one's livery colours, or the livery colours of one's chief. And shame on those who do not know their chief's livery...
Well double shame on me then, because I don't even know what livery is in the first place. I don't know how I'm supposed to have livery colors if I don't have livery in the first place (or not that I know of anyway). What the heck is livery???