

If however you are up to the challenge I can now think of a decent way to implement this. Furthermore I have not found an extension that uses some other type of notification, and I abandoned the project because I am not a front end developer and all the "notification" actions I wrote (change background color, put a thin border around viewport, etc) turned out to be ugly and disheartening (changing the omnibox color is much more elegant IMO). So to answer you question directly - there is no extension that acts exactly in the manner you want because it's not allowed via the API. The post also mentioned the release number that removed this functionality (I don't have it - it was not a major release).

It is amazing to me that you would ask this question because 6 months ago I set out to build this extension (I was going to name it Tempeh) after finding no viable alternative.
