Just read this blog entry on "Indian Liberals and Colour Pictures" by Amit Verma . Among other things, he talks about how colour pictures were used to transform chennai roads.
Excerpt : (Emphasis mine)
Cherubal works as a coordinator at Chennai City Connect, and holds the view that politicians and bureaucrats, sometimes caricatured as the villains in the piece by dogmatic liberals, are often on our side, and agree with us about the nature of the problems. But giving them abstract ideas about what to do is pointless, for they don’t have the bandwidth to take them further. The only effective approach is two-pronged: One, show them case studies to demonstrate that our solutions have worked elegantly elsewhere; Two, give them a detailed road-map of how to implement the solution.