We're embedding PowerBI reports in a custom application we're building. For the most part, this is working great. However, we can't figure out how to set the background color of the iframe in which reports are getting embedded. Note: we're not talking about the background color of the report. Instead, we're talking about the padding between the borders of the iframe and the report content. See attached image. From what we can tell, there's no way to set this from Desktop or from the embed calls we're making.
Ideally, we'd be able to reference an external CSS or something that would be used within the iframe of the report but that doesn't appear to be an option (and obviously, we can't control the styling of elements within the iframe from our application).
