diff --git a/FlatCAMApp.py b/FlatCAMApp.py
index 3dd4646f..410212fe 100644
--- a/FlatCAMApp.py
+++ b/FlatCAMApp.py
@@ -4979,6 +4979,7 @@ class App(QtCore.QObject):
         # self.plotcanvas.auto_adjust_axes()
         self.plotcanvas.vispy_canvas.update()           # TODO: Need update canvas?
         self.on_zoom_fit(None)
+        self.collection.update_view()
 
     # TODO: Rework toolbar 'clear', 'replot' functions
     def on_toolbar_replot(self):
@@ -7936,23 +7937,23 @@ The normal flow when working in FlatCAM is the following:</span></p>
     QObject::connect: Cannot queue arguments of type 'QVector<int>' 
     (Make sure 'QVector<int>' is registered using qRegisterMetaType().
     '''
-    def enable_plots(self, objects, threaded=False):
+    def enable_plots(self, objects, threaded=True):
         if threaded is True:
             def worker_task(app_obj):
-                percentage = 0.1
-                try:
-                    delta = 0.9 / len(objects)
-                except ZeroDivisionError:
-                    self.progress.emit(0)
-                    return
+                # percentage = 0.1
+                # try:
+                #     delta = 0.9 / len(objects)
+                # except ZeroDivisionError:
+                #     self.progress.emit(0)
+                #     return
                 for obj in objects:
                     obj.options['plot'] = True
-                    percentage += delta
-                    self.progress.emit(int(percentage*100))
+                    # percentage += delta
+                    # self.progress.emit(int(percentage*100))
 
-                self.progress.emit(0)
+                # self.progress.emit(0)
                 self.plots_updated.emit()
-                self.collection.update_view()
+                # self.collection.update_view()
 
             # Send to worker
             # self.worker.add_task(worker_task, [self])
@@ -7960,9 +7961,9 @@ The normal flow when working in FlatCAM is the following:</span></p>
         else:
             for obj in objects:
                 obj.options['plot'] = True
-            self.progress.emit(0)
+            # self.progress.emit(0)
             self.plots_updated.emit()
-            self.collection.update_view()
+            # self.collection.update_view()
 
     # TODO: FIX THIS
     '''
@@ -7972,7 +7973,7 @@ The normal flow when working in FlatCAM is the following:</span></p>
     QObject::connect: Cannot queue arguments of type 'QVector<int>' 
     (Make sure 'QVector<int>' is registered using qRegisterMetaType().
     '''
-    def disable_plots(self, objects, threaded=False):
+    def disable_plots(self, objects, threaded=True):
         # TODO: This method is very similar to replot_all. Try to merge.
         """
         Disables plots
@@ -7982,23 +7983,23 @@ The normal flow when working in FlatCAM is the following:</span></p>
         """
 
         if threaded is True:
-            self.progress.emit(10)
+            # self.progress.emit(10)
             def worker_task(app_obj):
-                percentage = 0.1
-                try:
-                    delta = 0.9 / len(objects)
-                except ZeroDivisionError:
-                    self.progress.emit(0)
-                    return
+                # percentage = 0.1
+                # try:
+                #     delta = 0.9 / len(objects)
+                # except ZeroDivisionError:
+                #     self.progress.emit(0)
+                #     return
 
                 for obj in objects:
                     obj.options['plot'] = False
-                    percentage += delta
-                    self.progress.emit(int(percentage*100))
+                    # percentage += delta
+                    # self.progress.emit(int(percentage*100))
 
-                self.progress.emit(0)
+                # self.progress.emit(0)
                 self.plots_updated.emit()
-                self.collection.update_view()
+                # self.collection.update_view()
 
             # Send to worker
             self.worker_task.emit({'fcn': worker_task, 'params': [self]})
@@ -8006,7 +8007,7 @@ The normal flow when working in FlatCAM is the following:</span></p>
             for obj in objects:
                 obj.options['plot'] = False
             self.plots_updated.emit()
-            self.collection.update_view()
+            # self.collection.update_view()
 
     def clear_plots(self):
 
diff --git a/ObjectCollection.py b/ObjectCollection.py
index 2f2d5711..153f68fe 100644
--- a/ObjectCollection.py
+++ b/ObjectCollection.py
@@ -256,13 +256,6 @@ class ObjectCollection(QtCore.QAbstractItemModel):
         # self.view.setAcceptDrops(True)
         # self.view.setDropIndicatorShown(True)
 
-        color = self.app.defaults['global_proj_item_color']
-        # set StyleSheet
-        stylesheet = "QTreeView::item {color: %s;}" % color
-
-        self.view.setStyleSheet(stylesheet)
-
-
         font = QtGui.QFont()
         font.setPixelSize(12)
         font.setFamily("Seagoe UI")
@@ -385,9 +378,10 @@ class ObjectCollection(QtCore.QAbstractItemModel):
                 return index.internalPointer().data(index.column())
 
         if role == Qt.ForegroundRole:
+            color = QColor(self.app.defaults['global_proj_item_color'])
             obj = index.internalPointer().obj
             if obj:
-                return QtGui.QBrush(QtCore.Qt.black) if obj.options["plot"] else QtGui.QBrush(QtCore.Qt.darkGray)
+                return QtGui.QBrush(color) if obj.options["plot"] else QtGui.QBrush(QtCore.Qt.lightGray)
             else:
                 return index.internalPointer().data(index.column())
 
@@ -690,6 +684,8 @@ class ObjectCollection(QtCore.QAbstractItemModel):
         :param name: Name of the FlatCAM Object
         :return: None
         """
+        log.debug("ObjectCollection.set_inactive()")
+
         obj = self.get_by_name(name)
         item = obj.item
         group = self.group_items[obj.kind]
@@ -769,4 +765,4 @@ class ObjectCollection(QtCore.QAbstractItemModel):
         return obj_list
 
     def update_view(self):
-        self.dataChanged.emit(QtCore.QModelIndex(), QtCore.QModelIndex())
+        self.dataChanged.emit(QtCore.QModelIndex(), QtCore.QModelIndex(), [QtCore.Qt.EditRole])
diff --git a/README.md b/README.md
index 0504b0d6..3530c21a 100644
--- a/README.md
+++ b/README.md
@@ -9,6 +9,11 @@ CAD program, and create G-Code for Isolation routing.
 
 =================================================
 
+01.05.2019
+
+- the project items color is now controlled from Foreground Role in ObjectCollection.data()
+- made again plot functions threaded but moved the dataChanged signal (update_view() ) to the main thread by using an already existing signal (plots_updated signal) to avoid the errors with register QVector
+
 30.04.2019
 
 - in ObjectCollection class, made sure that renaming an object in Project View does not result in an empty name. If new name is blank the rename is cancelled.