From February 22nd, 2012 to February 28th, 2017, 25% user give 5-star rating, 25% user give 3-star rating, 50% user give 1-star rating. for Apple Green chrome extension.
App does not work... No backgrounds were changed and extension is a scam.
It does not actually seem to work on all web pages, only a select few. I was not even for sure that it was working.
Definately Good
It doesn't do the trick for everything. The Google logo's still opaque and so it just leaves the background for those white. Also, Wikipedia's Vector skin is still white (though if you switch to the MonoBook skin, you will see the effect). So it's not the greatest app. I bet someone can do better.