Source google image: https://upload.wikimedia.org/wikipedia/commons/thumb/3/33/Metro_Paris_-_Ligne_3_-_station_Bourse_02.jpg/240px-Metro_Paris_-_Ligne_3_-_station_Bourse_02.jpg
Carrelage metro wikipedia
Source google image: https://upload.wikimedia.org/wikipedia/commons/thumb/3/33/Metro_Paris_-_Ligne_3_-_station_Bourse_02.jpg/240px-Metro_Paris_-_Ligne_3_-_station_Bourse_02.jpg