Thanks for the replies everyone!
The things said in this thread have definitely offered me new perspectives, but I'd be quite disappointed if I could not have a blue character in the game. It would definitely enhance the roleplaying possibilities. Like Redus said, though, I can still live in the ways of an original Na'vi inside the game. This is important! I do not need the action of the Avatar's license game, I want relationships, spirit and time together. Heroic actions can be made if they need to be made, like Neytiri standing up for Jake Sully. That, however, does not mean that it's the everyday life of a Na'vi. It's not. We had only a few clashes between humans and the Na'vi in a five days long Avatar LARP I participated. Sadly, I did not get to be Neytiri regardless of my countless queries.
Anyway... About entertainment affecting hair etc in real life: I actually beaded my hair for the LARP and have kept it like that ever since. Occasionally painting my face to look Na'vish has also formed into a habit! It's ADDICTING! *giggle*:cheer: