The colour options for Lx models of Tata nano special edition would be in Champagne Gold, Papaya Orange, Sunshine Yellow, Meteor Silver, Mojito Green and Pearl White.
To know more details, please follow the site: http://www.cardekho.com/colors/Tata_Nano/Tata_Nano_Lx_BSIV-colors.htm
New Tata Nano with EasyShift is available at Rs. 2 lac (Ex-showroom, Delhi), and the final cost depends on the valuation of your car. So, first get the valuation of your car from authorized Tata dealer, so he can give you a final quote for the new car.