diff --git a/README.md b/README.md
index 8807794..9d976bf 100644
--- a/README.md
+++ b/README.md
@@ -22,7 +22,13 @@ This is a work in progress, and is mostly a means for me to document my current
 
 > Note: If some Homebrew commands fail, you might need to agree to XCode's license or fix some other Brew issue. Run `brew doctor` to see if this is the case.
 
-## Included Applications / Configuration
+## Overriding Defaults
+
+Not everyone's development environment and preferred software configuration is the same.
+
+You can override any of the defaults configured in `default.config.yml` by creating a `config.yml` file and setting the overrides in that file (e.g. create a customized list of `homebrew_installed_packages`).
+
+## Included Applications / Configuration (Default)
 
 Applications (installed with Homebrew Cask):
 
diff --git a/vars/main.yml b/default.config.yml
similarity index 100%
rename from vars/main.yml
rename to default.config.yml
diff --git a/main.yml b/main.yml
index cbc337e..e8517b5 100644
--- a/main.yml
+++ b/main.yml
@@ -3,7 +3,12 @@
   connection: local
 
   vars_files:
-    - vars/main.yml
+    - default.config.yml
+
+  pre_tasks:
+    - include_vars: "{{ item }}"
+      with_fileglob:
+        - config.yml
 
   roles:
     - geerlingguy.homebrew