diff --git a/defaults/main.yml b/defaults/main.yml
index bc935b7..03ff253 100755
--- a/defaults/main.yml
+++ b/defaults/main.yml
@@ -40,3 +40,5 @@ gitea_mail_pass: ThisCouldBeYourAdd
 gitea_admin_user: gitea_adm
 gitea_admin_pass: gitea_fancy_adm_password!
 gitea_admin_mail: "{{ gitea_mail_user }}"
+
+gitea_ui_theme: gitea-dark
diff --git a/templates/opt/gitea/home/app.ini.j2 b/templates/opt/gitea/home/app.ini.j2
index 3cb1474..285af38 100755
--- a/templates/opt/gitea/home/app.ini.j2
+++ b/templates/opt/gitea/home/app.ini.j2
@@ -81,3 +81,6 @@ INSTALL_LOCK       = true
 INTERNAL_TOKEN     = `{{ gitea_internal_token }}`
 SECRET_KEY         = `{{ gitea_secret_key }}`
 PASSWORD_HASH_ALGO = pbkdf2
+
+[ui]
+DEFAULT_THEME = {{ gitea_ui_theme | default('gitea-auto') }}
\ No newline at end of file