Delhi-based brothers get close to 80 percent of their wealth from Berger Paints India, the country's second-largest paints-maker after Asian Paints. The value of their 75 percent stake has jumped to $1.5 billion along with shares of the company, securing their spot on the list for the second year in a row. Paint demand is expected to pick up amid an expected revival in infrastructure projects and the Central government's plan to build 'smart cities'.