Washer Lampshade for Use on Desk Lamps or Table Lamps with a Harp. The inside is typically white styrene (white plastic), unless the covering you choose specifies a different interior lining such as Paper Black Outer with Gold Foil lining. In most cases, the top and bottom are adorned with a 1/2" band of single fold lampshade trim. Paper shades typically arrive with a coordinating tape trim.