Yes, in the same way as you can trivially restyle a Word document with a few clicks around the Style section of the ribbon - making it easy to adjust for the demands of your publisher, or to the new corporate color scheme.

That is, it's trivial if you carefully followed the best practices, did everything correctly at every step to make sure the internal representation is semantically correct and complete - and not bashed stuff around, copying and pasting and dragging by hand, until it looked okay-ish on the screen, like everyone else does.