3.5.8.1. Using Existing Themes
The platform includes three ready-to-use themes: Hover, Halo and Havana. By default, the application will use the one specified in the cuba.web.theme application property.
The user may select the other theme in the standard Help > Settings screen. If you want to disable the option of selecting themes, register the settings
screen in the web-screens.xml file of your project and set the changeThemeEnabled = false
parameter for it:
<screen id="settings" template="/com/haulmont/cuba/web/app/ui/core/settings/settings-window.xml">
<param name="changeThemeEnabled" value="false"/>
</screen>