Thank you for your feedback, the background is not managed by the row background the form is embed in. If I try and edit any of my current forms on this website of which there is more than 20, they all show up on red in the preview within the plugin. As you can see from below preview which is not embedded as you assumed in your feedback.
As per previous feedback from myself, I can’t remove this background as we are using the Lite version of the plugin.