they were introduced into service after new standards released by the RSSB since most trains now have European-styled headlights allowing for better visibility from afar, unlike before when they needed the yellow fronts for visibility. The seat upholstery features a moquette by fabric designers Wallace Sewell. As railway lines have been transferred to London Overground operation, services are sometimes operated using rolling stock inherited from the previous train operating company, and for a temporary period these trains have been branded with transitional livery until they are replaced with newer rolling stock. When the first London Overground services began, they were operated using Silverlink rolling stock which retained Silverlink's purple and lime green livery with yellow doors. The Silverlink logos were removed and Overground banners were added. This rolling stock was eventually completely replaced with new, Overground-branded trains. Similarly, since the takeover of the Lea Valley lines, Overground services are being run with trains inherited from Abellio Greater Anglia which are mostly in a plain white livery with red doors. Prior to replacement of this rolling stock, the trains were repainted with full Overground livery and the interiors refurbished with Wallace Sewell upholstery and TfL standard signage and route maps. In June 2018, London Overground unveiled its first complete Class 710 unit, complete with a newly designed livery and moquette. In October, it then began a programme to refresh the Class 378 fleet, giving them a livery designed to appear similar to the one designed for the Class 710. Recent developments Gospel Oak to Barking line Electrification It was announced in June 2013 that £115 million of funding for electrification was being made available as part of upgrades to rail infrastructure included in the government's 2013 spending round. At the same time Transport for London announced that they had obtained a £90 million commitment from the Chancellor of the Exchequer and the Secretary of State for Transport. In September 2015, Network Rail awarded the £56.9m contract to electrify the line to J. Murphy & Sons. Part closures (on weekends and from South Tottenham to Barking) were planned from June to late September 2016, followed by a full closure from October to February 2017, and further evening and weekend works until late June 2017, and finally around four months of further work to add the wires so that electric Class 710 trains can run from early 2018. The line was to be