Wedding shawl help

Our wedding is in February, and we're having an outdoor ceremony and an indoor reception at the same place. Considering buying a knitted shawl for wearing during the ceremony to cover my shoulders if it's chilly. My bouquet will have red, white and blue flowers. My groom is wearing a navy blue suit and his red, white and blue tie. That's our color theme since we're very patriotic. Should I get a navy blue shawl or a red one?