The rare and elusive happy Sans

Related to the previous theory about socio-emotional eye glowing, I wonder if different colors could mean different things. Blue and yellow for stress and fear, for example.

Edit - Check out Bettina Levy's dub!
And the 8th Human's!

Chinese translation!
Hungarian translation!
French translation!
Brazilian Portugese translation!
Second Chinese translation!

This actually wasn't done entirely digitally for once, believe it or not!


Sans, Papyrus, Toriel, kid, Undyne, Alphys (c) Undertale omg other characters!!