The bright color left versus the fading black-and-white right
The left panel against the right panel, read across the central seam
The left panel is printed in flat, saturated color: yellow hair, a pink face, red lips, a band of turquoise over the eyes. Cross to the right panel and the color is gone. It is black-and-white, and as the eye travels right the printing thins, the faces growing fainter until the last ones dissolve toward blank canvas at the far edge. The literal fact is color on one side and a fading grey on the other; the reading of it as life against death, glamour against oblivion, is a widely held interpretation, and a fair one, but Warhol never fixed that meaning.