It is possible to control the display settings of the report using the General tab in display settings.
In the Home tab, under Action click on the Display (settings) icon and go to General Tab.
Toolbar
You can select Light theme or dark theme as per your choice from the toolbar option.
Light theme Toolbar
Dark theme Toolbar
Theme
You can select light or dark theme as from the Theme drop down option.
Canvas Background
The canvas background color can be changed using this property
Header word wrap
This option provides an option to word-wrap either Row or column or both in the header. you can also switch it off from the drop-down.
Text
Text color can be changed using this property. The color applied here will be used, unless there is a formatting given for text from the formatting tab or using conditional formatting, in which case that will take precedence.
Major Gridlines
Major gridlines can be used to give gridlines to the parent elements in a hierarchy. This option will appear only when the visual has a hierarchy. The line can be a solid line or a dashed line.
Minor Gridlines
Minor gridlines can be used to give gridlines for the leaf node elements in a hierarchy. This option will be available even if there is no hierarchy. The line can be solid or dashed line.
Skip Lines
This option appears once the minor gridline option is selected. Skip lines represents the repeat pattern of the minor gridline. For e.g., if skip line is 2, then the minor gridline will be applicable for every 2nd row.