Monday Menus: Just in time for March Madness, a new sports bar has opened in Union Square East. But Campeon is not your ordinary sports bar – this one has a Mexican theme, and is decorated to appeal to those that demographic of sports fans known as women. That means neon pink walls and Margaritas, Mojitos and more than one dozen brands of tequila, four types of guacamole, including one with grapefruit, and entrees ranging from carne asada to north-of-the-border grilled salmon. There are three dozen flat screens in varying sizes, but so far no happy hour specials. Campeon is at 9 East 16 St.