After featuring Dulux’s brilliant ‘Let’s Colour’ campaign – here, and here – it would seem that people are going crazy for vibrant street painting. Dutch artists Jeroen Koolhaas and Dre Urhahn have previous here though, their first ‘Favela Painting‘ was back in 2006 and yielded two murals which were painted in Vila Cruzeiro, Rio’s most notorious slum. This time their back on a monumental scale – unveiling a 7,000sqm art intervention that sees 34 houses, on the giant hillside favela of Praça Cantão, given a beautifully vivid overhaul…..