Index: sources/gui/qml/compounds/NumPad.qml
===================================================================
diff -u -rbfdee4cd41dfc4609cbd6045e64217731433f79d -rfd09b0ee6e41d75755e0572008d4f932b0bddf2b
--- sources/gui/qml/compounds/NumPad.qml	(.../NumPad.qml)	(revision bfdee4cd41dfc4609cbd6045e64217731433f79d)
+++ sources/gui/qml/compounds/NumPad.qml	(.../NumPad.qml)	(revision fd09b0ee6e41d75755e0572008d4f932b0bddf2b)
@@ -38,12 +38,10 @@
 
     width                   : Variables.numPadWidth
     height                  : Variables.numPadHeight
-    visible                 : false
     radius                  : 9
     color                   : Colors.backgroundMain
     x                       : Math.round((Variables.applicationWidth   - _root.width) / 2)
     y                       : Math.round((Variables.applicationHeight  - _root.height) / 2)
-    onVisibleChanged        : if ( ! _root.visible  )   { reset()                           }
     onDisplayValueChanged   : if ( _root.setter     )   { _root.setter( _valueLabel.text )  }
     onSettingValueChanged   : _valueLabel.text = _root.settingValue !== undefined ? _root.settingValue : ""
 
@@ -54,6 +52,12 @@
 
     function open(entry, title, min, max, unit) {
         reset()
+        setup(entry, title, min, max, unit)
+        _keyboard.setVisible(false)
+        show()
+    }
+
+    function setup(entry, title, min, max, unit) {
         _root.settingValue  = Qt.binding(function () { return entry.text })
         _root.title         = title
         _root.unit          = unit
@@ -63,25 +67,21 @@
                                                                 .arg(max)
         _root.getter        = entry.text
         _root.setter        = function (value) { entry.text  = value }
-        _root.validator     = function (value) { { return value >= min && value <= max } }
-        _keyboard.setVisible(false)
-        show()
+        _root.validator     = function (value) { return value >= min && value <= max }
     }
 
     function show() {
-        if ( ! _root.visible  ) { _root.visible = true  }
         if ( ! isOpened ) {
             x = x + _root.width
             isOpened = true
         }
     }
 
-    function hide( hideOnly = false ) {
+    function hide() {
         if ( isOpened ) {
             x = x - _root.width
             isOpened = false
         }
-        else if ( _root.visible && ! hideOnly )   { _root.visible = false }
     }
 
     function reset() {
@@ -162,7 +162,7 @@
                 pixelSize   : 65
                 weight      : Font.DemiBold
             }
-            color   : isValueValid ? "white" : "gray"
+            color   : isValueValid ?  Colors.offWhite : Colors.red
             text    : ""
         }
     }
@@ -236,7 +236,7 @@
                         anchors.centerIn: parent
                         text            : _keyButton.text
                         font.pixelSize  : 40
-                        color           : enabled ? "white" : "dimgrey"
+                        color           : enabled ? Colors.offWhite : "dimgrey"
                     }
                 }