I am trying to create a custom userobject that hovers over my ribbonbar that I've created.  I want that object to have the feel that it is part of the ribbonbar, but it is technically not part of it.

So to do that, I have all the objects in my custom userobject have a transparent background.  The problem is that for whatever reason, the userobject becomes the color of the background of the MDI instead of the background color of the ribbonbar.  Why is this, and is there a workaround for it?  I can confirm that the custom userobject and all of its child objects have been excluded from the theme JSON file.