This Art is titled  THE THEIF. THE THEIF steals the only colorful iris out of the two eyes. He keeps on stealing the soul out of the humans he meets leaving the dead or the useless colorless eye. The black and white eye has an enlarged IRIS to show that the owner was surprised to realize that he had lost the only color left in his soul to a THEIF.  May be THE THEIF was a close person or close friend since he did not realize that the color is being stolen until it was. May be he trusted this THE THEIF.