Can I set the background color in a Firefox extension's popup notification?

问题

I am using the popup notification system described in the tutorial https://developer.mozilla.org/en/Using_popup_notifications . It is possible to change the background-color or text-color of the popup?

回答1:

The example code in the documentation creates a <popupnotification popupid="sample-popup"> tag in the browser window (obviously, popupid attribute depends on the ID you specified when opening the notification), you can style it. Add the following code to a CSS file loaded by your browser overlay:

popupnotification[popupid="sample-popup"]
{
  background-color: #123456;
}

回答2:

Yes you can change the colors, search for a stylesheet file to change the styling as per your requirements.

来源：https://stackoverflow.com/questions/9617562/can-i-set-the-background-color-in-a-firefox-extensions-popup-notification