Hello,
on the page "What's new in the Power BI Service", in the section for September 2015, it says:
Additionally, you can control your visual colors in the dashboard. If your report is using a different theme from the dashboard theme, you can control whether the visual retains current theme, or uses the default dashboard theme to achieve consistency across visuals from various sources.
I know how to change individual colors in a report, but how do I set a dashboard theme or a report theme???? And HOW do I control "whether the visual retains current theme, or uses the default dashboard theme"? What do I click?