Index: sources/gui/qml/components/Circle.qml
===================================================================
diff -u -ra5760947d3ed0d2748ba023a1c25e3c6aa0b1de1 -r77ba0083b790f7c1c851c60ecaeaa4f2e7eff7a8
--- sources/gui/qml/components/Circle.qml	(.../Circle.qml)	(revision a5760947d3ed0d2748ba023a1c25e3c6aa0b1de1)
+++ sources/gui/qml/components/Circle.qml	(.../Circle.qml)	(revision 77ba0083b790f7c1c851c60ecaeaa4f2e7eff7a8)
@@ -39,6 +39,8 @@
 
     property real  diameter     : Variables.circleNormalDiameter
 
+    property bool  runAnimation : false
+
     width   : diameter
     height  : diameter
 
@@ -72,5 +74,18 @@
                 }
             }
         }
+
+        OpacityAnimator { target: _shape
+            from        : 0.2
+            to          : 1
+            duration    : 1000
+            running     : ! runAnimation
+            onFinished  : {
+                var tmp = from
+                from = to
+                to  = tmp
+                ! runAnimation ? restart() : target.opacity = 1
+            }
+        }
     }
 }