FWIW I want this to work for both of you. I wanted the single file to be a good enough drop-in to get a project started, but I also reorganized the CSS to make it easier to override it for custom theming. There should be a minified version too.
> also reorganized the CSS to make it easier to override it
I think this could/should be made more clear on the homeppage.
I generally prefer cascading styles (base+override) - but for that to work well, especially with bug fixes to the underlying library/framework - the CSS needs to be well structured.
I'm a little amazed that the theming story for earlier versions of bootstrap is so horrible, for example (although, part of that is due to terrible "theme packs" by people that don't understand CSS, or bootstrap).