You will be able to match the Golden colour I would imagine in Bombay, being there are so many auto shops there......sourcing the paint in UK or USA is very hard as the freight restrictions make it very very expensive to get even a litre to Bombay... If you look up Jaguar Golden Sand locally, you should get a close match and there will be high end custom shops in Bombay that will match colours, surely?. I live in Africa and we have Somali "unofficial" freight couriers here cheaply but if I was coming via DHL or something it would be running hundreds of dollars. Also, paints have a colour mix..so googling around you might find a colour mix chart for "Goilden Sand" which then a good professional could match.
Try finding an equivalent of Jaguar Goilden Sand in the Azko Nobel PAINTS RANGE.... or get from Jaguar Owners or general googling the Jaguar Paint Code for Golden Sand, then google the paint code to try and get the mixing formula to give your chap.