on 05 May 2019 09:17:20
The Report Theme Designer pane would be accessible from the View tab just like the other panes (Field Properties, Bookmarks, Selection, Sync Slicers) and would allow the theme designer to easily choose the colors. font families, text sizes, etc at a granular level. Once complete, the author could export the new report theme (.JSON file) and thus import this theme to other Power BI reports just like any other report theme file.