It was a complex but entertaining book. All the different characters and situations
that act separately come together in the end in a very entertaining way. It combines several themes to make a very
interesting story that has people giving their praise to it. All in all, it is about several incidents coming down as one.
The answer is 'his hair turns grayer' - that is the physical change which took place in the spirit of Christmas present from when he first appears in the story to when he leaves.
