He looked at the portrait. Despite his efforts, something was off. A single nuance of color off, to be precise. He could not tell exactly what, but something was not what it was supposed to be. Even though everything was ostensibly as it should – every object was in its proper place, and the portrait looked like the person it was supposed to depict – something was still irking him.
Even though the client probably would not notice, he had to find out what it was. So he set out to paint another portrait. His restless worry would allow nothing else.