Contributed by David Carrier / Upon entering Peter Doig’s show at Serpentine South Gallery in London, you see Painting for Wall Painters (Prosperity P.o.S.), a vibrant depiction of a half-finished mural he photographed in the Port-of-Spain, Trinidad and Tobago’s capital city. If Henri Rousseau had actually gone to the tropics, and they had inspired him to intensify his pigments, he might have painted something like Doig’s three large-scale works, which feature sensuous, saturated colors depicting the Lion of Judah, a Rastafarian symbol, freed in the streets of the city.