diff -r 624b9694cb0d -r 08e4394ff4fb BeremizIDE.py
--- a/BeremizIDE.py	Wed Aug 16 15:18:57 2017 +0300
+++ b/BeremizIDE.py	Wed Aug 16 16:37:45 2017 +0300
@@ -149,7 +149,8 @@
             self.output.Freeze()
             self.lock.acquire()
             for s, style in self.stack:
-                if style is None: style = self.black_white
+                if style is None:
+                    style = self.black_white
                 if style != self.black_white:
                     self.output.StartStyling(self.output.GetLength(), 0xff)