List templates
docker exec -it horizon bash ls -l /var/lib/kolla/venv/lib/python2.7/site-packages/openstack_dashboard/themes
Configure theme
/etc/kolla/horizon/custom_local_settings
AVAILABLE_THEMES = [ ('default', 'Default', 'themes/default'), ('foo_bar', 'Foo bar', 'themes/foo_bar') ] SELECTABLE_THEMES = [ ('foo_bar', 'Foo bar', 'themes/foo_bar') ] DEFAULT_THEME = 'foo_bar'