change changed status's color to blue

closes #256 (closed)

• Change the changed status's color to blue from red which is more of the color code for error
• Set up in view/util/color.py the dict COLOR with meaningful color name.
• In database dialogs, change also the background of changed widgets to light blue for case that it is changed to empty. This won't affect valueColorEdit and combo box. (Changing border won't be consider because it change styleSheet which will affect the appearance of button on widget like combo box or spin box)

sohstationviewer/view/db_config/value_color_helper/value_color_edit.py

@@ -23,6 +23,7 @@ from sohstationviewer.view.db_config.value_color_helper.functions import \
 from sohstationviewer.view.db_config.param_helper import \
     validate_value_color_str
 from sohstationviewer.view.util.plot_type_info import plot_types
+from sohstationviewer.view.util.color import COLOR
 
 
 plot_types_with_value_colors = [
@@ -129,7 +130,7 @@ class ValueColorEdit(QTextEdit):
         Set border color for the widget.
         :param color: color to set to border
         """
-        self.setStyleSheet("QTextEdit {border: 2px solid %s;}" % color)
+        self.setStyleSheet("QTextEdit {border: 4px solid %s;}" % color)
 
     def set_background_color(self, background: str):
         """
@@ -162,12 +163,12 @@ class ValueColorEdit(QTextEdit):
     def set_border_color_according_to_value_color_status(self):
         """
         Set border color according to current value color string.
-          + Red for changed
+          + Blue for changed
           + Same color as background (no border) for other case.
         """
         if self.value_color_str != self.org_value_color_str:
             # Show that value_color_str has been changed
-            self.set_border_color('red')
+            self.set_border_color(COLOR['changedStatus'])
         else:
             # Reset border the same color as background
             self.set_border_color(self.background)
@@ -187,7 +188,7 @@ class ValueColorEdit(QTextEdit):
             'upDownDots': UpDownDialog,
         }
         # set border color blue showing that the widget is being edited
-        self.set_border_color('blue')
+        self.set_border_color(COLOR['changedStatus'])
         edit_dialog = plot_type_dialog_map[self.plot_type](
             self, self.value_color_str
         )