So here is what I wanted to do. You take one page, any page, say for eg. http://www.smashingmagazine.com/ and now using Google Chrome you edit something (you know how to edit with google chrome, ctrl + u, and so on...), say logo or some color. Now, is there any way to save those changes and then you get some link. Then you send that link to someone else and what he see is modified page with the same original url or little modified url?

Is that even possible, somehow?

As far as I know that's not possible unless you "hack" the site. You could do what you are asking with a cross site scripting (XSS) vulnerabiltiy. I won't go into further details, but forget about your "wish". I don't see any legal way of doing what you are asking for.