The color green is most commonly associated with Ireland, but at Senor O’Malley’s, it pulls double duty, spilling over to complete the Mexican flag and unite two very different cultures. Amid classic pub-style decor that includes exposed brick walls, diners come together to feast on not-so-classic pub-style eats, headlined by 14 different varieties of tacos. Traditional burgers, ground and spiced fresh daily, costar on a menu that also features 12 beers on tap and pitchers of margaritas. True to its mixed theme, Senor O’Malley’s draws an eclectic crowd that ranges from students and families to young professionals and retirees. As evenings progress, five flat-screen TVs glow with sports, and music accompanies rounds of suds long after the chefs have closed the kitchen and their Spanish-to-Gaelic dictionaries.