NLXL Mono Leaves Blue Wallpaper MRV-12 By Mr & Mrs Vintage. Striking and bold, this intricate 'Mono Leaves' design in Blue creates a show-stopping display on any wall. Heavy-duty wallpaper with paper top-layer and non-woven backing. No wallpapering table necessary, glue is applied to the wall. Colourfast and washable with a soft cloth.