The background image on bing.com doesn't seem to invert with either "invert image" or the entire extension. If you could add a quick fix as a CSS rule to invert the page, which seems to work on the Stylish extension, that'd be great. Thanks.
Thank you for your addon which seems to be the lightest among the ones I've tried.
I don't understand why you have hard-coded all the theme settings but one. I'd like to have two or more custom themes to choose among, one dark and one light. I could hack the contents of .xpi file, replacing the settings of one or more of the 15 available themes, but so doing I will be forced to not update the addon...