on chat:
    if {nick::%player%} is set:
        cancel event
        broadcast "%{prefix}% %player%&a:&f %colored message%"

command /prefix [<player>] [<text>]:
    trigger:
        if arg 1 is not set:
            message "&cPlayer not found"
            stop
        if arg 2 is not set:
            message "&cprefix not found"
            stop
        set {prefix} to colored arg 2
        set {nick::%arg-1%} to 1

command /clearprefix [<player>]:
    trigger:
        if arg 1 is not set:
            message "&cPlayer not found"
            stop
        clear {nick::%arg-1%}
        stop