Well, the last two appear not to work, the province.csv giving info about places and the colonynames.csv being pre-fixed suggestions for certain countries, or something.
The first one seems to make sense but I don't know what the numbers are and I really can't be arsed to search through the province file to discover the numbers.
Having said that, I've just had an idea, tested it and discovered it works. I just use the find function to search for the province name in the prov file and and the number is right next to it. Good.
Still, when I check an established, properly named colony in the save file (like New Milan, in Ciskei which is a CoT city, which I'll keep), it doesn't have a "name = New Milan". When it's given a default name, is it not saved like a manually edited one?
One last thing, that doesn't apply, how do you shift capitals? I think it's reasonable to demand France shifts it's capital when you've stormed the place repeatedly, with it only possessing some crappy south-western provinces and a capital which is a surrounded target...