diff --git a/defaults/main.yml b/defaults/main.yml
index 8998b42..23ad724 100644
--- a/defaults/main.yml
+++ b/defaults/main.yml
@@ -1,5 +1,6 @@
 ---
 configure_apache: false
+custom_theme_url: https://gitlab.com/bz0qyz/nagios4-dark-theme/-/archive/master/nagios4-dark-theme-master.zip
 nagios4_config:
   admin_email: 'monitor-admin@example.org'
   admin_pager: 'monitor-admin-pager@example.com'
diff --git a/tasks/configure_custom_theme.yml b/tasks/configure_custom_theme.yml
new file mode 100644
index 0000000..70b4f2d
--- /dev/null
+++ b/tasks/configure_custom_theme.yml
@@ -0,0 +1,30 @@
+---
+- name: Get theme
+  unarchive:
+    remote_src: true
+    src: "{{ custom_theme_url }}"
+    dest: /usr/src/nagio4_theme
+
+- name: Get current stylesheets stats
+  stat:
+    path: /etc/nagios4/stylesheets
+  register: stylesheets
+
+- name: Copy old stylesheets
+  copy:
+    remote_src: true
+    src: /etc/nagios4/stylesheets
+    dest: /etc/nagios4/stylesheets_original
+  when: not stylesheets.stat.islnk
+
+- name: Remove old stylesheets
+  file:
+    state: absent
+    path: /etc/nagios4/stylesheets
+  when: not stylesheets.stat.islnk
+
+- name: Create link to custom theme
+  file:
+    state: link
+    path: /etc/nagios4/stylesheets
+    src: /usr/src/nagio4_theme/stylesheets
diff --git a/tasks/main.yml b/tasks/main.yml
index fea3602..9815af7 100644
--- a/tasks/main.yml
+++ b/tasks/main.yml
@@ -8,3 +8,7 @@
 - name: Ensure Apache is configured for Nagios
   include_tasks: configure_apache.yml
   when: configure_apache
+
+- name: Ensure custom theme is configured for Nagios
+  include_tasks: configure_custom_theme.yml
+  when: custom_theme_url != ''