within a couple of months hed shot up at least a head , and his skinny frame had filled up with muscle from working long , tireless hours at the statues building site ; his pale complexion had taken a light brown sheen , the blue of his eyes had darkened , and even the pitch of his voice had dropped , alarmingly , save from some shrill notes that still escaped him , betraying the fact that , although to look at him one might easily say he was a youth of twelve , he was not yet seven .