VALUE BLiND was designed with a plethora of symbolism in mind.
Morphing Paint
All the morphing paint represents the emotions of either the Thug of the Painter.
The Fly
The fly is a foreshadowing element. When the Painter squishes the fly, it turns to black paint. Flies are typically annoying, and so the fly's presence was to tell the Painter how annoyed the Thug is at his painting a white wall with white paint, with no variation.
Street lamp
The street lamp is always shining down on the Thug. He is "enlightened" from the beginning.
The Shadow
The shadow that comes from the Thug is in a way a reference to Dr. Carl Jung's concept of "The Shadow" in that the shadow (representing the Thug) actually is what the Painter wants/has been repressing. This could be interpreted that the Painter wanted change but was not willing to admit it.
The Thug's Eye Slits
The Thug's eye slits are just another way of showing that he can "see" from the very beginning.
Birds
As the Thug is aggravated that the Painter is using only white, he wants to share with him the opposite value, black. By giving the Painter this other value, he will have the freedom of painting any value between them he wants. The birds hence represent freedom, even though it may appear to be a cruel act of the Thug's.
Piranhas
The Painter is extremely upset that the Thug "ruined" his wall by splattering black paint all over it. So he sends a bunch of angry piranha fish at the Thug, who doesn't bother to fight back, as the Painter still can't "see" yet.
Rats
The Painter goes to wipe off the paint from the wall-- it mixes and forms grey rats. The Painter is still oblivious to the grey, and is disgusted; hence the paint takes rat form.
Butterflies
The butterflies represent beauty in the mixing of black and white.
The Painter's Eyes
Once the Painter sees the butterfly, he too is enlightened and can "see".