 There is little in the themes or styles of the three panels to suggest that they were originally conceived as a whole.Though they share the same orange background, Bacon had already used this colour in two prior pieces; moreover, his "oeuvre" can be characterized by periods that are dominated by a single background colour.From the beginning of his career, Bacon preferred to work in series and found that his imagination was stimulated by sequences; as he put it, "images breed other images in me."