Siblings are the fourth generation in a family of paintmakers and get bulk of their wealth from a 75% stake in Kolkata-headquartered Berger Paints India. They bought it in 1990 from liquor tycoon Vijay Mallya and built it into the country's secondlargest paintmaker. The firm, which is benefiting from lower raw material prices, is setting up 2 factories in Assam in eastern India. Two of their children work at Berger and also have board seats.