I have created the following test report by Power BI Desktop with one Card visual.
I saved this formatting into the JSON file (View => Themes => Save current theme) because I want that the same formatting to be used in dashboard also. In Power BI cloud service I uploaded the same JSON file but nothing happens to the Card formatting. It still looks the same gray. Why is that?
Is it because the JSON file doesn't contain references to the Card visual? But if I saved the report's theme that contained the Card visual then why didn't it build complete JSON file that could contain all report elements? How can I know what is the right reference tag for each elements. Microsoft doesn't seem to have appropriate manual also.