In Grafana, you can modify the UI theme configured in the Settings or Preferences. Set the UI theme for the server, an organization, a team, or your personal user account using the instructions in this topic.
The theme affects how Grafana displays graphs, menus, other UI elements.
### Default
**Default** is either the dark theme or the theme selected in a higher level. For example, if an Organization administrator set the **Light** theme, then that is the default for all the teams in that organization.
Grafana server administrators can change the Grafana UI theme for all users on the server by setting the [default_theme]({{< relref "../configuration.md#default-theme" >}}) option in the Grafana configuration file.
To see what the current settings are, refer to [View server settings]({{< relref "../view-server/view-server-settings.md" >}}).
## Change organization UI theme
Organization administrators can change the UI theme for all users in an organization.