↑Ibn Hammad (d. 1230) in Akhbar al-Muluk Bani Ubayd (ed. Paris, 1927, p. 57) mentions that Ismail al-Mansur in 948 after his victory over Abu Yazid was met at Kairwan by the notables mounted on fine horse and carrying drums and green flags. While green is often referred to as the dynastic colour of the Fatimids, it appears that the Fatimid caliphate did also use white, in opposition to the black used by the Abbasid caliphate. "The Ismaili Shiʿite counter-caliphate founded by the Fatimids took white as its dynastic color, creating a visual contrast to the ʿAbbasid enemy ... white became the Shiʿite color, in deliberate opposition ot the black of the ʿAbbasid 'establishment'." Jane Hathaway, A Tale of Two Factions: Myth, Memory, and Identity in Ottoman Egypt and Yemen, 2012, p. 97f.