You can replace any background image of your website in dark mode with the background image replacement feature of WP Dark Mode. Learn how to use the background image change feature from the video.
Video Tutorial #
Go to the WordPress dashboard and WP Dark Mode > Image Settings.

Go to the website section where you want to change the image and copy the image URL.

Then paste the image URL into the “Light Mode Image” field.

Now, from the “Dark Mode Image” field choose a new image from your library.

Save the settings and check our website to see the changes in action.