Unspiral - 2 , by gianni sarcone , 2005 , abstract , Op Art style , Circle, Pattern, Line
A computer generated image of a green, purple, and black spiral.
 an optical illusion. It is a spiral. The outer ring is black. The inner ring is green. The inside ring is purple. The center of the spiral is black with a white center. The entire spiral is composed of green and purple lines.