diff --git a/guiframe.py b/guiframe.py
index 3d7fdaf..8fdb0e9 100644
--- a/guiframe.py
+++ b/guiframe.py
@@ -1170,8 +1170,10 @@ class GUIFrame(QWidget):
             try:
                 _color = self.settings.data[top_key][key]["data"]["color"][new_idx]               
             except KeyError as ex:
-               
                 _color = "black"
+            except IndexError as ex:
+                _color = "black"
+
             meas_line.setStyleSheet("color: {0}".format(_color))
             self.sender().tabBar().setTabTextColor(new_idx, QColor(_color))
             self.parent.input_parameters[key] = sender_tab