Thanks for your responses.
He doesn't seem to be blue at all - laughs, participates in conversations etc. but that is something to keep an eye on.
I don't think there is any hazing going on in the activities he participates in and there certainly isn't anything negative happening if we go out as a family (something he's recently resisting as well) - which may also be a preteen thing.
This happened through our very bright summer as well so I don't think it's Seasonal Affective Disorder but more time outside certainly wouldn't hurt (back to square one there though).
Does anyone else have a tired growing 12 year old?
