diff --git a/sierspinksi.py b/sierspinksi.py
index 6363858..67f5498 100644
--- a/sierspinksi.py
+++ b/sierspinksi.py
@@ -59,3 +59,16 @@ def getMid(p1,p2):
 
 
 triangle(points,6)
+To add colour: colored.red('red string')
+
+To change shell colour: def hilite(string, status, bold):
+attr = []
+if status:
+# green
+attr.append('32')
+else:
+# red
+attr.append('31')
+if bold:
+attr.append('1')
+return '\x1b[%sm%s\x1b[0m' % (';'.join(attr), string)