Here we go:
It will append " - feedly" to the page title.
This is easily adaptable to just replace the title as asked here.
At least add "feedly" somewhere in the title in addition to the feed title. This way I could search for the browser window using window title, and add a keyboard shortcut for it (Linux, KDE) (this is much more efficient than checking every browser window to see if it's the one).
On the web cloud version you can add feed urls as well as website urls (feed autodetected), and some keywords for search.