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Busses, Trams and U-Bahn (Lightrail) here in Frankfurt have a common livery. They are all in a turquise green colour called "Subaru Vista blue" which is the brand colour of the VGF, Frankfurts city owned transit company (from what I heard the colour was originally invented for the car maker Subaru, hence the name, but then sold to Frankfurt). The S-Bahn (Suburban rapid transit) is an exeption, these trains are red as the are operated by Deutsche Bahn.
