Hi there....
I can't remember what issue the conversions were in, but I was actually responsible for some of them...
The mutiny figure was a very easy convertion ,a green stuff hat and I think I reshaped the water bottle to make it more British, the rest was done with paint.
As the British in India wore tunics and shell jackets you should be okay, I would change the trousers the are tucked into socks so that they are untucked or turned up.
I hope that has been of some help...
All the best. Aly