The colors for Tiger were taken from the study collages made from papier gommette, a colored gummed paper sold by Parisian stationers and used in French kindergartens. [4]  Kelly's use of this material reveals his particular interest in the objet trouvé (found object), which is a key to understanding his visual world, for Kelly finds his abstract forms and contours in the negative spaces of his natural or urban environment. Whether recalling shadows from a barn, or the empty space of an opened window, Kelly often used shapes created in architecture for his abstract works.