diff --git a/theme/monokai.css b/theme/monokai.css
index d70bb86f2937c39249bd2a2fffe32054ab2ccd2f..9b9a6f3919212528c929d44944ba1895ebdb94fe 100644
--- a/theme/monokai.css
+++ b/theme/monokai.css
@@ -20,6 +20,7 @@
 
 .cm-s-monokai span.cm-variable {color: #f8f8f2;}
 .cm-s-monokai span.cm-variable-2 {color: #9effff;}
+.cm-s-monokai span.cm-variable-3 {color: #66d9ef;}
 .cm-s-monokai span.cm-def {color: #fd971f;}
 .cm-s-monokai span.cm-bracket {color: #f8f8f2;}
 .cm-s-monokai span.cm-tag {color: #f92672;}