diff --git a/help/waterfox.md b/help/waterfox.md
index 62c44d52..dde0e12a 100644
--- a/help/waterfox.md
+++ b/help/waterfox.md
@@ -11,3 +11,7 @@
 Waterfox has 2 preference files: `prefs.js` and `user.js`.
 
 `prefs.js` are the settings defined by the browser and `user.js` is an optional file that you can create. `user.js` takes precedence over `prefs.js` and will replace the settings in `prefs.js` when Waterfox is started.
+
+## Theme
+
+Waterfox allows you to customize the appearance of the browser by creating your own `userChrome.css`. It is located inside of the `chrome` folder, which needs to be created by the user.