R B Dark Umbrella ( - ) is a British painter. R B Dark Umbrella s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 59.59 USD for study of a naked female and ghostly silhouette in a door way in 2006 to 75.28 USD for Stuginteriör in 2008 , based on the size and medium of the artwork.