Worldbuilding crap for my podcast, what the hell?
(Text transcription, since it's probably too small:
SOUL THEORY: The soul of a Human is always one pure color. This is reflected in their eye color.
If they are to turn, their new soul is shown, the eyes becoming a gradient of the different soul colors.
If they are possessed,their soul stays the same, but the colors of their possessor’s eyes are reflected in their own eyes. The souls of the possessed and possessor separate when removed, while the nonhuman souls stay combined.
Those born half-nonhuman already have the gradient.)