Apparently, the color of the interiors you wear on New Year's Eve also sets the "color" for the whole of next year. Wearing yellow underwear attracts positive energy and a year of prosperity, while red underwear will bring a year of romance and passion. That being said, at least.
Blue lingerie is said to bring a year of good health, green linger a year better than last year, white is a year of peace, joy and happiness, and pink lingerie brings luck to love.
In Italy, it is believed that red insects bring luck, as well as being a symbol of fertility. If you happen to have polka dots underwear or even bracelets in your underwear, even better! The round shape symbolizes coins and money and will bring you wealth along the way next year.