diff --git a/util.js b/util.js
index ab1288b..cefa35d 100644
--- a/util.js
+++ b/util.js
@@ -77,6 +77,16 @@ util.log = function(string) {};
  */
 util.inspect;
 
+/**
+ * @param {*} object
+ */
+util.inspect.styles;
+
+/**
+ * @param {*} object
+ */
+util.inspect.colors;
+
 /**
  * @param {*} object
  * @return {boolean}