reviews for that look harsh. its limited to 5 sites?? another alternative is (shameless plug) this one: https://addons.mozilla.org/en-US/firefox/addon/night-li

reviews for that look harsh. its limited to 5 sites?? another alternative is (shameless plug) this one: https://addons.mozilla.org/en-US/firefox/addon/night-light-mode/ https://addons.mozilla.org/en-US/firefox/addon/night-light-m... its open source :)