Originally conceived due to the personal animosity between Paul Brown and Art Modell, the "Battle of Ohio" between the Browns and the Cincinnati Bengals has been fueled by the sociocultural differences between Cincinnati and Cleveland, a shared history between the two teams, and similar team colors, as Brown used the exact shade of orange for the Bengals that he used for the Browns. (Though this has changed since then, as the Bengals now use a brighter shade of orange.) Modell, in fact, moved the Browns to the AFC after the AFL–NFL merger in order to have a rivalry with the Bengals. The rivalry has also produced two of the eight highest-scoring games in NFL history. Cincinnati has the all-time edge 51–43. While the Bengals have a 27–16 edge since the Browns returned to the NFL in 1999, the Browns-Bengals series has been more competitive than the Browns' series with their other division rivals.