Yeah, Nameless! That's another way Yellow works with fear!
Calm? That's a pretty good idea. Though is anybody around here really all that calm?
Another thing I just thought of, though, is that the colours of the rings are not just emotions, they're motivations. Rage, Greed, Hope, Love, Fear, they are all reasons to do stuff. Maybe we could think of emotions that suit that...
Also, the warm colours seem to be negative emotions (Rage, Greed and previously Fear) so maybe yellow should end of being something negative.