Northern Line Black LampshadeMastering Vitreous Enamel; Black Colour Notes You know you mean business when you see the rich black of the Northern Line. As one of London Undergrounds predominant commuter lines, everyone has their own story to tell. Flashes of polished shoes and tailored suits catch your eye as you race towards the business district. Steeped in history, you can almost hear the rustle from newspapers of commutes past, a timeless experience captured in a timeless