I installed WordPress on my website along with a theme close to what I wanted. I then changed virtually all the formatting to make it conform to my site. I don't plan on publishing my version, but I would like to make it my own so as not to confuse it with the original. I get notices about updates to the original and I don't want to inadvertently upgrade it.
I see that the folder under themes has the name of the theme, but I imagine there's more to it than that. I can do database alters if necessary. Would it be easier just to create a new theme and copy all the files to it?