Working at night in a light interface can be strenuous and cause eye strain. Starting from version 6.3, ONLYOFFICE Docs support both dark and light themes.
The dark theme colors vary from black to light-gray, providing a comfortable interface for working in low-light conditions.
To enable the dark theme,
- go to the File tab,
 - open the Advanced Settings section,
 - choose the Dark theme in the Interface theme dropdown list in the Appearance section,
        
 - click the Apply button at the bottom of the page.
 
To quickly access the available interface themes,
- go to the View tab,
 - click the Interface Theme button,
 - choose the required theme.
 
Now you are all set to continue working comfortably.