Changing faction colours

Greetings
How would I go about changing the colours of factions? Can I shuffle existing colours between factions or add new ones in?

shuffel, yes.
add, no.
do u know how to?
If not pleanty ppl do.
LK

Shuffle yes? No I dont how to.. any suggestions there Lord Krazy?

How do you 'shuffle'?

Thanks,
Gilbert de Clare