Re-structure my gratitude to a great OSS software and its creator in description sections; Remove some truths and added some lies that will not affect some people's feelings :)
Refactor the code. Now the script doesn't inject and overwrite style rules.
Expose a function to users in case automatically replace process failed, you can manually call $$replace()
in console to regain your freedom;
Expose a variable $$content
to users, which is the original doc content being removed via JS at runtime. Wow, how cool is that, show you the content then remove it and pretend nothing had happend.