“Simple Bootstrap theme which people can use it (embed) on their own Bootstrap baset site. Like Bootstrapping this theme, change all the css classes to bootstrap components.”
Ah, that’s the opposite of what I would do, but might also work. That does mean you would have to still edit the template yourself to fit it in with your site though. Because if I add classes for columns and your site is using a slightly different set-up all the work is for neigh.
“Bootstrap theme without any css, using only Bootstrap components.”
I am not sure how that would work…