Dark is printed upside down and very dark. Higher contrast between the dark and mid-tone makes the front shapes look interestingly as if they are flying in 3D. This effect is more pronounced than in the blue and red equivalents of this image because the green is lighter and cooler. These are also fewer ditracting texture lines in the centre. The image is very strangely balanced by the diagonal lines. The total area of dark on right and left is roughly the same.