Hi! I would like to integrate all newsletters via the Archive extension in my website. In general, this works. BUT: the website has a black background (correct). The newsletters in the archive also have a black background (should be white) and black letters (correct). How can I change the background in the archived newsletters shown by the extension to white?
You should try to hack the CSS of your site to force a white background… try to ask for support on a design forum, showing the the page so they can find out the html structure and the correct rule to add to your CSS.