diff --git a/ktane.js b/ktane.js
index db22287..b35d0a6 100755
--- a/ktane.js
+++ b/ktane.js
@@ -42,8 +42,8 @@ $('.jsResetSection').on('click', function () {
     $('#wireOptions button').on('click', function () {
         var colour = this.getAttribute('data-colour'),
             letter = this.getAttribute('data-letter'),
-            $li = $('<li><button class="button' + colour.charAt(0).toUpperCase() + colour.substring(1)
-                        + '" data-colour="' + colour + '" data-letter="' + letter + '"></button></li>');
+            $li = $('<li><button class="button ' + colour + '" data-colour="' + colour
+                    + '" data-letter="' + letter + '"></button></li>');
 
         $wireList.append($li);
         count[colour]++;