Nosy Mitso juveniles often show blue barring when they are sub adults. There was one on kingsnake a week or so back that looked like a blue on green ambilobe minus the weaker bars and the red eye. To answer your question, they look like juvy mitso to me. Look in the classified ads for an ad from chameleonnation that says 6 month old mitso for sale or something like that. I think you'll get your answer.
Justin
EDIT: It was not the add from chameleonnation with the one I was thinking of, it must have been on kingsnake a couple weeks back, The in the cham nation add fires up with some black bars.