diff --git a/doc/themes.rst b/doc/themes.rst
index 72a4c8d..7c40ef2 100644
--- a/doc/themes.rst
+++ b/doc/themes.rst
@@ -7,26 +7,33 @@ modify the visual appearance.
 
 Changing the current theme
 ==========================
-In ``data/config.php``, set your theme like this:
+In ``data/config.php``, set your theme like this: ::
 
     $theme = 'darkmood';
 
 
-Changeable files
-================
+Creating your own theme
+=======================
 
-CSS file
---------
-FIXME, missing at the moment
+CSS and image files
+-------------------
+Since both file types need to be accessible via the web server directly,
+they are located in the ``www/`` folder: ::
+
+    www/themes/$themename/
+
+The main CSS file that automatically gets included is ::
+
+    www/themes/$themename/scuttle.css
 
 
 Template files
 --------------
-The templates of the default file are located in
+The templates of the default file are located in ::
 
     data/templates/default/
 
-You may put your theme template files into
+You may put your theme template files into ::
 
     data/templates/$themename/