diff --git a/README.md b/README.md
index ee31cf3..ec1267c 100644
--- a/README.md
+++ b/README.md
@@ -196,6 +196,24 @@ NOTE: This action should be run part of this gem (not your application). In case
 make it up-to-date, clone the repo, run the rake task, examine the diff, fix any bugs, make sure
 tests pass and then send PR here.
 
+### Customizing the CSS
+
+To customize the CSS for your application, use the `extra_css_path` configuration option.
+
+```ruby
+GrapeSwaggerRails.options.extra_css_path = 'my-swagger-customizations.css'
+```
+
+Then you'll need to add a matching .css file in the `app/assets/stylesheets` directory 
+for your application. This file should contain any customizations you want to make over the delivered CSS.
+
+You may also need to reference this CSS file in your `config/initializers/assets.rb` file, in order for Sprockets to include it when your
+CSS files are compiled:
+
+```ruby
+Rails.application.config.assets.precompile += %w( my-swagger-customizations.css )
+```
+
 ### Enabling in a Rails-API Project
 
 The grape-swagger-rails gem uses the Rails asset pipeline for its Javascript and CSS. Enable the asset pipeline with [rails-api](https://github.com/rails-api/rails-api).
diff --git a/app/views/grape_swagger_rails/application/index.html.erb b/app/views/grape_swagger_rails/application/index.html.erb
index 7131627..e1c3954 100644
--- a/app/views/grape_swagger_rails/application/index.html.erb
+++ b/app/views/grape_swagger_rails/application/index.html.erb
@@ -5,6 +5,9 @@
   <meta name="viewport" content="width=device-width, initial-scale=1.0">
   <link href='//fonts.googleapis.com/css?family=Droid+Sans:400,700' rel='stylesheet' type='text/css'/>
   <%= stylesheet_link_tag 'grape_swagger_rails/application.css' %>
+  <% if GrapeSwaggerRails.options.extra_css_path %>
+    <%= stylesheet_link_tag GrapeSwaggerRails.options.extra_css_path %>
+  <% end %>
   <%= javascript_include_tag 'grape_swagger_rails/application.js' %>
   <script type="text/javascript">
 	$(function () {
diff --git a/lib/grape-swagger-rails.rb b/lib/grape-swagger-rails.rb
index f8e0294..dfe8454 100644
--- a/lib/grape-swagger-rails.rb
+++ b/lib/grape-swagger-rails.rb
@@ -38,6 +38,7 @@ def before_action(&block)
     before_action_proc:     nil, # Proc used as a controller before action
 
     hide_url_input:         false,
-    hide_api_key_input:     false
+    hide_api_key_input:     false,
+    extra_css_path:         nil
   )
 end