Index: sources/gui/qml/components/ModalDialog.qml
===================================================================
diff -u -rea51c0546c7061d225e7b9d8b754554c65f0d1b1 -rdeaef8b5bdfe9be7293e63fb6ac256a9ce3cd3f4
--- sources/gui/qml/components/ModalDialog.qml	(.../ModalDialog.qml)	(revision ea51c0546c7061d225e7b9d8b754554c65f0d1b1)
+++ sources/gui/qml/components/ModalDialog.qml	(.../ModalDialog.qml)	(revision deaef8b5bdfe9be7293e63fb6ac256a9ce3cd3f4)
@@ -16,6 +16,7 @@
 // Qt
 import QtQuick 2.12
 import QtQuick.Controls 2.12 // Dialog
+import QtGraphicalEffects 1.12
 
 // Project
 //  Qml imports
@@ -35,6 +36,7 @@
     property alias  radius              : _backgroundRect.radius
     property alias  notificationText    : _notification.text
     property alias  notification        : _notification
+    property bool   showDropShadow      : false
 
     width   : Variables.dialogWidth
     height  : Variables.dialogHeight
@@ -50,16 +52,28 @@
 
     closePolicy: Dialog.NoAutoClose
     Overlay.modal : Rectangle { id : _borderRect
-        anchors.fill    : parent
-        anchors.bottomMargin:  _alarmBar.visible ? Variables.notificationHeight : 0
-        color           : "#B3000000"
+        anchors.fill        : parent
+        anchors.bottomMargin: _alarmBar.visible ? Variables.notificationHeight : 0
+        color               : "#99000000"
 
         Behavior on opacity { NumberAnimation { duration: 300} }
     }
 
     background: Rectangle { id: _backgroundRect
         color : Colors.backgroundDialog
         radius: Variables.dialogRadius
+
+        layer.enabled: showDropShadow
+        layer.effect: DropShadow {
+            id: _dropShadow
+            horizontalOffset: 4
+            verticalOffset  : 4
+            radius          : 12
+            samples         : 32
+            color           : "#4DFFF8E1"
+            source          : _backgroundRect
+            anchors.fill    : _backgroundRect
+        }
     }
 
     onVisibleChanged: {