A combination of pictures taken during the London 2012 Olympic Games shows athletes' fingernails decorated with their national colors. From top left : USA's Allison Schmitt, Hungary's Suzana Jacobos, Britain's Rebecca Adlington, Mexico's Luz Mercedes Acosta Valdez, Britain's Alison Williamson, USA's Venus Williams, Britain's Alison Williamson, France's Margaux Farrell, Lithuania's Ruta Meilutyte. (AFP/GettyImages)