Athletics events kick off on Thursday at the Paris Olympics on a brand new and technologically improved running track that is purple for the first time in the history of the games. The track was developed by the Italian company Mondo, which has supplied the main stadium track for every Olympic Games since 1992. Tokyo’s 2020 Olympic track was the common rust or brick red colour while Rio’s 2016 track was blue. The hope is that the new geometrical shape of the air cells under this year’s track will help the athletes break new records. Why is the athletics track purple?This year, Olympic organise…