Now I know why my yellow zone was so empty. I had accidentally left out both
Nog and
Menel, who would probably belong there, both of them. So:
Yellow zone (slightly suspicious):
Menel
Nogrod - something just doesn't sit right with him..
Other than that, I have little to say. I'm still waiting for
Mac to appear, to see in what kind of a manner he denies my theory.

Of course we can't derive straight conclusions from his answer, but I hope it will be of help.
Sorry folks - I'm a bit obsessed right now with this affair. Can't help it.
EDIT: x-ed with Mac *ahem*