Hi Dmitri, It is a global browser setting that the add-on toggles. It is not currently possible to configure it per page, and adding that kind of functionality to the add-on would be difficult. So you simply have to toggle it back and forth, depending on which page you are looking at. You can use either the toolbar button or the hot-key for toggling.
You could try searching if there are other add-ons which do what you want.
Re: Toggle colors for a single page?
It is a global browser setting that the add-on toggles. It is not currently possible to configure it per page, and adding that kind of functionality to the add-on would be difficult. So you simply have to toggle it back and forth, depending on which page you are looking at. You can use either the toolbar button or the hot-key for toggling.
You could try searching if there are other add-ons which do what you want.