Talk:Eight Humans/@comment-29689441-20160820174734/@comment-24821641-20160915102618

It is pink.

In Alphys's lab you can see blueprints on the desk that show a normal monster soul, then an arrow pointing to a human soul, so presumably she just turned his around somehow to resemble a human soul, but not technically be one.

Pretty much the same as putting Frisk's soul into yellow mode.