Carlton House had the most extravagant interiors in all of Regency London. Happily it was recorded in a beautiful series of watercolours, published as aquatints, by William Henry Pyne before its destruction by George IV. He shows three interiors painted in Granite Green and remarks in his text how admirably the colour sets off the exotic marbles used for the columns. I find this shade still works fantastically in this regard – the Prussian blue and yellow ochre in its make up anchoring it beautifully to all sorts of natural materials from marble and stone through to wood and terra cotta.