diff --git a/ansible/roles/deploy_container_authelia/defaults/main.yml b/ansible/roles/deploy_container_authelia/defaults/main.yml
index dbaf64d..2e4ec6b 100644
--- a/ansible/roles/deploy_container_authelia/defaults/main.yml
+++ b/ansible/roles/deploy_container_authelia/defaults/main.yml
@@ -7,6 +7,7 @@
 # ---------------------
 container_authelia_version: latest  # Authelia container image tag/version
 container_authelia_domain: authelia.example.com  # Fully Qualified Domain Name (FQDN) for Authelia
+container_authelia_theme: "dark" # dark, light or grey theme
 
 # ---------------------
 # Server Settings
diff --git a/ansible/roles/deploy_container_authelia/templates/configuration.yml.j2 b/ansible/roles/deploy_container_authelia/templates/configuration.yml.j2
index 01c4530..a151962 100644
--- a/ansible/roles/deploy_container_authelia/templates/configuration.yml.j2
+++ b/ansible/roles/deploy_container_authelia/templates/configuration.yml.j2
@@ -1,6 +1,8 @@
 server:
   address: 'tcp4://:{{ container_authelia_server_port | default(9091) }}'
 
+theme: {{ container_authelia_theme }}
+
 log:
   level: {{ container_authelia_log_level | default('debug') }}
   file_path: '{{ container_authelia_log_file_path | default("/var/log/authelia/authelia.log") }}'