The Kaladipet metro station and Toll Gate metro station will highlight the importance of 'water conservation' and 'pollution free Chennai' respectively. The makeover for these two stations will commence in the coming months. Nippon Paint’s hi-tech and eco-friendly exterior paints had been used to beautify the Wimco Nagar Metro station, S Mahesh Anand, president – decorative paint, Nippon Paint India said.