London Overground rail lines will be given individual names and colours to make the network easier to navigate. The six names will be Lioness, Mildmay, Windrush, Weaver, Suffragette and Liberty, London Mayor Sadiq Khan has announced. They were chosen to honour and celebrate “different parts of London’s unique local history and culture,” he said. The overhaul will require one of the biggest changes in the history of the capital’s Tube map. London Overground lines have all been coloured orange on the map since the network was created in 2007 when Transport for London (TfL) took control of servic…