diff --git a/FlatCAMApp.py b/FlatCAMApp.py
index d1dcd2f0..a43f9da6 100644
--- a/FlatCAMApp.py
+++ b/FlatCAMApp.py
@@ -6709,8 +6709,15 @@ class App(QtCore.QObject):
 
     def on_save_button(self):
         log.debug("App.on_save_button() --> Saving preferences to file.")
+
+        # Preferences saved, update flag
         self.preferences_changed_flag = False
 
+        # Preferences save, update the color of the Preferences Tab text
+        for idx in range(self.ui.plot_tab_area.count()):
+            if self.ui.plot_tab_area.tabText(idx) == _("Preferences"):
+                self.ui.plot_tab_area.tabBar.setTabTextColor(idx, QtGui.QColor('black'))
+
         self.save_defaults(silent=False)
         # load the defaults so they are updated into the app
         self.load_defaults(filename='current_defaults')
@@ -7414,6 +7421,11 @@ class App(QtCore.QObject):
     def on_preferences_edited(self):
         self.inform.emit('[WARNING_NOTCL] %s' %
                          _("Preferences edited but not saved."))
+
+        for idx in range(self.ui.plot_tab_area.count()):
+            if self.ui.plot_tab_area.tabText(idx) == _("Preferences"):
+                self.ui.plot_tab_area.tabBar.setTabTextColor(idx, QtGui.QColor('red'))
+
         self.preferences_changed_flag = True
 
     def on_plot_area_tab_closed(self, title):
diff --git a/README.md b/README.md
index 8a1a12d1..7dcd06e9 100644
--- a/README.md
+++ b/README.md
@@ -14,6 +14,8 @@ CAD program, and create G-Code for Isolation routing.
 - the "CRTL+S" key combo when the Preferences Tab is in focus will save the Preferences instead of saving the Project
 - fixed bug in the Paint Tool that did not allow choosing a Paint Method that was not Standard
 - made sure that in the FlatCAMGeometry.merge() all the source data is deepcopy-ed in the final object
+- the font color of the Preferences tab will change to red if settings are not saved and it will revert to default when saved
+- fixed issue #333. The Geometry Editor Paint tool was not working and using it resulted in an error
 
 5.11.2019
 
diff --git a/flatcamEditors/FlatCAMGeoEditor.py b/flatcamEditors/FlatCAMGeoEditor.py
index 7017929e..087f3a19 100644
--- a/flatcamEditors/FlatCAMGeoEditor.py
+++ b/flatcamEditors/FlatCAMGeoEditor.py
@@ -4664,17 +4664,16 @@ class FlatCAMGeoEditor(QtCore.QObject):
                         poly_buf = Polygon(geo_obj).buffer(-margin)
 
                     if method == "seed":
-                        cp = Geometry.clear_polygon2(poly_buf,
-                                                     tooldia, self.app.defaults["geometry_circle_steps"],
+                        cp = Geometry.clear_polygon2(self, polygon_to_clear=poly_buf, tooldia=tooldia,
+                                                     steps_per_circle=self.app.defaults["geometry_circle_steps"],
                                                      overlap=overlap, contour=contour, connect=connect)
                     elif method == "lines":
-                        cp = Geometry.clear_polygon3(poly_buf,
-                                                     tooldia, self.app.defaults["geometry_circle_steps"],
+                        cp = Geometry.clear_polygon3(self, polygon=poly_buf, tooldia=tooldia,
+                                                     steps_per_circle=self.app.defaults["geometry_circle_steps"],
                                                      overlap=overlap, contour=contour, connect=connect)
-
                     else:
-                        cp = Geometry.clear_polygon(poly_buf,
-                                                    tooldia, self.app.defaults["geometry_circle_steps"],
+                        cp = Geometry.clear_polygon(self, polygon=poly_buf, tooldia=tooldia,
+                                                    steps_per_circle=self.app.defaults["geometry_circle_steps"],
                                                     overlap=overlap, contour=contour, connect=connect)
 
                     if cp is not None: