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Dashboard Widgets and Wizards
Dashboard Widget Colours - Themes
You can change the Rounding of the Edges of the Widgets in the Dashboard Interface by selecting the Left Menu Active Colour option from System Settings --> Themes --> Colours ---> Dashboard Widget --> Dashboard Widget Corners. You can also change the Colours of the Dashboard by updating the Font Colour in Themes. Team Dashboards will start to be released in 2020. Towards the end of the year.