horizon/server/plugin/theme.yml

parameters:
  _param:
    horizon_dashboard_theme: mirantis
  horizon:
    server:
      plugin:
        horizon_theme:
          app: horizon_theme
          theme_name: ${_param:horizon_dashboard_theme}
          source:
            engine: pkg
            name: openstack-dashboard-${_param:horizon_dashboard_theme}-theme
      themes:
        default: "mirantis"
        available:
          mirantis:
            name: "Mirantis"
            description: "Mirantis theme"
            enabled: True
          material:
            enabled: False