Follow these steps to add a custom theme in the Azure app service deployment location:
Log in to your Azure portal account and navigate to the created Azure app service resources. For example, we have created an app service named azurearmsite
Select the required app service from the list of resources. Once the app service page is loaded, search and select the Advanced Tools option and click Go.
From the new page, select the option CMD from the Debug console dropdown.
Page like below will be loaded up.
Go to the dashboard theme location site/wwwroot/bi/dataservice/dashboardthemes
Download any default theme files from the above-highlighted path and modify theme property values as per your requirement and Save the modified theme file.
Select and hold the saved custom theme file, drag, & drop it to the dashboardthemes
location like below.
Wait till the file is uploaded to the dashboardthemes
folder.
Refresh the browser page of the Bold BI site and open the theme drop-down in a banner. Now, you can see that added custom theme file name is listed in it.