Adding a palette for map buttons.

src/QGCPalette.cc

@@ -98,6 +98,16 @@ QColor QGCPalette::_textFieldText[QGCPalette::_cThemes][QGCPalette::_cColorGroup
     { QColor(0x2c, 0x2c, 0x2c), QColor(0, 0, 0) },
 };
 
+QColor QGCPalette::_mapButton[QGCPalette::_cThemes][QGCPalette::_cColorGroups] = {
+    { QColor(0x58, 0x58, 0x58), QColor(0, 0, 0) },
+    { QColor(0x58, 0x58, 0x58), QColor(0, 0, 0) },
+};
+
+QColor QGCPalette::_mapButtonHighlight[QGCPalette::_cThemes][QGCPalette::_cColorGroups] = {
+    { QColor(0x58, 0x58, 0x58), QColor(190, 120, 28) },
+    { QColor(0x58, 0x58, 0x58), QColor(190, 120, 28) },
+};
+
 QGCPalette::QGCPalette(QObject* parent) :
     QObject(parent),
     _colorGroupEnabled(true)

src/QGCPalette.h

@@ -86,6 +86,12 @@ class QGCPalette : public QObject
     // Text color for TextFields
     Q_PROPERTY(QColor textFieldText READ textFieldText NOTIFY paletteChanged)
     
+    /// Background color for map buttons
+    Q_PROPERTY(QColor mapButton READ mapButton NOTIFY paletteChanged)
+
+    /// Background color for map button in selected or hover state
+    Q_PROPERTY(QColor mapButtonHighlight READ mapButtonHighlight NOTIFY paletteChanged)
+
 public:
     enum ColorGroup {
         Disabled = 0,
@@ -121,6 +127,9 @@ public:
     QColor textField(void) const { return _textField[_theme][_colorGroupEnabled ? 1 : 0]; }
     QColor textFieldText(void) const { return _textFieldText[_theme][_colorGroupEnabled ? 1 : 0]; }
     
+    QColor mapButton(void) const { return _mapButton[_theme][_colorGroupEnabled ? 1 : 0]; }
+    QColor mapButtonHighlight(void) const { return _mapButtonHighlight[_theme][_colorGroupEnabled ? 1 : 0]; }
+
     static Theme globalTheme(void) { return _theme; }
     static void setGlobalTheme(Theme newTheme);
 
@@ -154,6 +163,9 @@ private:
     static QColor _textField[_cThemes][_cColorGroups];
     static QColor _textFieldText[_cThemes][_cColorGroups];
     
+    static QColor _mapButton[_cThemes][_cColorGroups];
+    static QColor _mapButtonHighlight[_cThemes][_cColorGroups];
+
     void _themeChanged(void);
     
     static QList<QGCPalette*>   _paletteObjects;    ///< List of all active QGCPalette objects

src/QmlControls/DropButton.qml

@@ -162,7 +162,7 @@ Item {
         border.width:   2
         border.color:   "white"
         opacity:        checked ? 0.95 : 0.65
-        color:          checked ? "orange" : "black"
+        color:          checked ? qgcPal.mapButtonHighlight : qgcPal.mapButton
 
         Image {
             id:             button

src/QmlControls/RoundButton.qml

@@ -3,6 +3,7 @@ import QtQuick.Controls         1.2
 import QtQuick.Controls.Styles  1.2
 
 import QGroundControl.ScreenTools   1.0
+import QGroundControl.Palette       1.0
 
 Item {
     id: _root
@@ -17,6 +18,8 @@ Item {
     property bool checked: false
     property ExclusiveGroup exclusiveGroup: null
 
+    QGCPalette { id: qgcPal }
+
     onExclusiveGroupChanged: {
         if (exclusiveGroup) {
             exclusiveGroup.bindCheckable(_root)
@@ -29,7 +32,7 @@ Item {
         border.width:   2
         border.color:   "white"
         opacity:        checked ? 0.95 : 0.65
-        color:          checked ? "orange" : "black"
+        color:          checked ? qgcPal.mapButtonHighlight : qgcPal.mapButton
         Image {
             id:             button
             anchors.fill:   parent