Charlie's hair is definitely lighter than Mary Clare's was at nine months, but according to my precise record keeping (thank you, TB archives), her eyes were, in fact, still blue at nine months. So Charlie's could change to brown. But oh, I hope not. Because I would be okay with a blonde haired, blue eyed bouncing baby boy.
As would his Nana Thole. For all of her talk about wanting brown eyed grandchildren—you always want what you don't have—she now says, "Well, I didn't say I wanted all of them to have brown eyes."
Do you hear that, Charlie bird? Don't go changing.