Theming over report level and visual container styles
These release notes describe functionality that may not have been released yet. To see when this functionality is planned to release, please review Summary of what’s new. Delivery timelines and projected functionality may change or may not ship (see Microsoft policy).
Report authors need common formatting applied to all their reports. Power BI allows you to create themes that define the formatting options for each visual, and now for report and visual container styles, too.
Authors can create themes that specify formatting for all parts of their report, including page background color, visual headers, borders, and so on. They also can style all visuals including text boxes.