_:vb6928184 . _:vb6928184 "Not only were the platforms tiled in white, the tunnels were painted white too - to prettify them, and make them less claustrophobic - and the Central proudly issued a postcard of its tunnel-whitening machine."@en . . "1" . _:vb6928183 . _:vb6928183 "The color/colour of snow or milk; the colour of light containing equal amounts of all visible wavelengths."@en . _:vb6928184 "2012, Andrew Martin, Underground Overground: A passenger's history of the Tube, Profile Books, \u2192ISBN, page 117:"@en .