Football fans who have an allegiance to either of the two teams appearing in this year’s Super Bowl will have plenty of options to show their colors when hosting a game-day party. Rooting for the New England Patriots? Festoon your family room in navy blue, red and silver. More of a Falcons fan? Opt for black and red instead. Or offer guests a choice of colors on party cups, napkins, balloons and cupcakes, and let them take sides ahead of the coin toss to encourage friendly gridiron rivalries.