Colour in contextual play Joseph Kosuth, Cornelia Lauf ; exhibition curated by Cornelia Lauf ; book conceived and designed by Joseph Kosuth ; texts by Mira Dimitrova, Joseph Kosuth, Cornelia Lauf, Davide Mazzoleni, Luigi Mazzoleni ; edited and produced by Mira Dimitrova ; Italian translation by Aurelia Di Meo