diff --git a/src/gui/kernel/kernel.pri b/src/gui/kernel/kernel.pri
index eb87a8c31b..91374fe2dd 100644
--- a/src/gui/kernel/kernel.pri
+++ b/src/gui/kernel/kernel.pri
@@ -21,6 +21,7 @@ HEADERS += \
         kernel/qplatformintegrationfactory_p.h \
         kernel/qplatformintegrationplugin.h \
         kernel/qplatformtheme.h\
+        kernel/qplatformtheme_p.h \
         kernel/qplatformthemefactory_p.h \
         kernel/qplatformthemeplugin.h \
         kernel/qplatformwindow.h \
diff --git a/src/gui/kernel/qguiapplication.cpp b/src/gui/kernel/qguiapplication.cpp
index 432929fec5..b05ba28e48 100644
--- a/src/gui/kernel/qguiapplication.cpp
+++ b/src/gui/kernel/qguiapplication.cpp
@@ -180,7 +180,7 @@ static void initPalette()
         if (const QPalette *themePalette = QGuiApplicationPrivate::platformTheme()->palette())
             QGuiApplicationPrivate::app_pal = new QPalette(*themePalette);
     if (!QGuiApplicationPrivate::app_pal)
-        QGuiApplicationPrivate::app_pal = new QPalette(Qt::black);
+        QGuiApplicationPrivate::app_pal = new QPalette(Qt::gray);
 }
 
 static inline void clearPalette()
@@ -1014,6 +1014,7 @@ void QGuiApplicationPrivate::init()
     // and QImage conversion functions
     qInitImageConversions();
 
+    initPalette();
     QFont::initialize();
 
 #ifndef QT_NO_CURSOR
diff --git a/src/gui/kernel/qpalette.cpp b/src/gui/kernel/qpalette.cpp
index f15559981b..df3d4dfef0 100644
--- a/src/gui/kernel/qpalette.cpp
+++ b/src/gui/kernel/qpalette.cpp
@@ -1096,6 +1096,40 @@ void QPalette::setColorGroup(ColorGroup cg, const QBrush &foreground, const QBru
     setBrush(cg, ToolTipText, toolTipText);
 }
 
+Q_GUI_EXPORT QPalette qt_fusionPalette()
+{
+    QColor backGround(239, 235, 231);
+    QColor light = backGround.lighter(150);
+    QColor mid(backGround.darker(130));
+    QColor midLight = mid.lighter(110);
+    QColor base = Qt::white;
+    QColor disabledBase(backGround);
+    QColor dark = backGround.darker(150);
+    QColor darkDisabled = QColor(209, 200, 191).darker(110);
+    QColor text = Qt::black;
+    QColor hightlightedText = Qt::white;
+    QColor disabledText = QColor(190, 190, 190);
+    QColor button = backGround;
+    QColor shadow = dark.darker(135);
+    QColor disabledShadow = shadow.lighter(150);
+
+    QPalette fusionPalette(Qt::black,backGround,light,dark,mid,text,base);
+    fusionPalette.setBrush(QPalette::Midlight, midLight);
+    fusionPalette.setBrush(QPalette::Button, button);
+    fusionPalette.setBrush(QPalette::Shadow, shadow);
+    fusionPalette.setBrush(QPalette::HighlightedText, hightlightedText);
+
+    fusionPalette.setBrush(QPalette::Disabled, QPalette::Text, disabledText);
+    fusionPalette.setBrush(QPalette::Disabled, QPalette::Base, disabledBase);
+    fusionPalette.setBrush(QPalette::Disabled, QPalette::Dark, darkDisabled);
+    fusionPalette.setBrush(QPalette::Disabled, QPalette::Shadow, disabledShadow);
+
+    fusionPalette.setBrush(QPalette::Active, QPalette::Highlight, QColor(48, 140, 198));
+    fusionPalette.setBrush(QPalette::Inactive, QPalette::Highlight, QColor(145, 141, 126));
+    fusionPalette.setBrush(QPalette::Disabled, QPalette::Highlight, QColor(145, 141, 126));
+    return fusionPalette;
+}
+
 #ifndef QT_NO_DEBUG_STREAM
 QDebug operator<<(QDebug dbg, const QPalette &)
 {
diff --git a/src/gui/kernel/qplatformtheme.cpp b/src/gui/kernel/qplatformtheme.cpp
index 9f5c789a6e..b8bc72cf73 100644
--- a/src/gui/kernel/qplatformtheme.cpp
+++ b/src/gui/kernel/qplatformtheme.cpp
@@ -41,6 +41,8 @@
 
 #include "qplatformtheme.h"
 
+#include "qplatformtheme_p.h"
+
 #include <QtCore/QVariant>
 #include <QtCore/QStringList>
 #include <QtCore/qfileinfo.h>
@@ -137,6 +139,33 @@ QT_BEGIN_NAMESPACE
     \sa themeHint(), QStyle::pixelMetric()
 */
 
+QPlatformThemePrivate::QPlatformThemePrivate()
+        : systemPalette(0)
+{ }
+
+QPlatformThemePrivate::~QPlatformThemePrivate()
+{
+    delete systemPalette;
+}
+
+Q_GUI_EXPORT QPalette qt_fusionPalette();
+
+void QPlatformThemePrivate::initializeSystemPalette()
+{
+    Q_ASSERT(!systemPalette);
+    systemPalette = new QPalette(qt_fusionPalette());
+}
+
+QPlatformTheme::QPlatformTheme()
+    : d_ptr(new QPlatformThemePrivate)
+{
+
+}
+
+QPlatformTheme::QPlatformTheme(QPlatformThemePrivate *priv)
+    : d_ptr(priv)
+{ }
+
 QPlatformTheme::~QPlatformTheme()
 {
 
@@ -156,7 +185,12 @@ QPlatformDialogHelper *QPlatformTheme::createPlatformDialogHelper(DialogType typ
 
 const QPalette *QPlatformTheme::palette(Palette type) const
 {
-    Q_UNUSED(type)
+    Q_D(const QPlatformTheme);
+    if (type == QPlatformTheme::SystemPalette) {
+        if (!d->systemPalette)
+            const_cast<QPlatformTheme *>(this)->d_ptr->initializeSystemPalette();
+        return d->systemPalette;
+    }
     return 0;
 }
 
diff --git a/src/gui/kernel/qplatformtheme.h b/src/gui/kernel/qplatformtheme.h
index 0e95321102..ee12792547 100644
--- a/src/gui/kernel/qplatformtheme.h
+++ b/src/gui/kernel/qplatformtheme.h
@@ -52,6 +52,7 @@
 //
 
 #include <QtCore/QtGlobal>
+#include <QtCore/QScopedPointer>
 
 QT_BEGIN_NAMESPACE
 
@@ -63,6 +64,7 @@ class QPlatformMenu;
 class QPlatformMenuBar;
 class QPlatformDialogHelper;
 class QPlatformSystemTrayIcon;
+class QPlatformThemePrivate;
 class QVariant;
 class QPalette;
 class QFont;
@@ -72,6 +74,7 @@ class QFileInfo;
 
 class Q_GUI_EXPORT QPlatformTheme
 {
+    Q_DECLARE_PRIVATE(QPlatformTheme)
 public:
     enum ThemeHint {
         CursorFlashTime,
@@ -249,6 +252,7 @@ public:
         AnimateToolBoxUiEffect = 0x40
     };
 
+    explicit QPlatformTheme();
     virtual ~QPlatformTheme();
 
     virtual QPlatformMenuItem* createPlatformMenuItem() const;
@@ -274,6 +278,12 @@ public:
     virtual QIconEngine *createIconEngine(const QString &iconName) const;
 
     static QVariant defaultThemeHint(ThemeHint hint);
+
+protected:
+    explicit QPlatformTheme(QPlatformThemePrivate *priv);
+    QScopedPointer<QPlatformThemePrivate> d_ptr;
+private:
+    Q_DISABLE_COPY(QPlatformTheme)
 };
 
 QT_END_NAMESPACE
diff --git a/src/gui/kernel/qplatformtheme_p.h b/src/gui/kernel/qplatformtheme_p.h
new file mode 100644
index 0000000000..2b965819c6
--- /dev/null
+++ b/src/gui/kernel/qplatformtheme_p.h
@@ -0,0 +1,74 @@
+/****************************************************************************
+**
+** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/legal
+**
+** This file is part of the QtGui module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and Digia.  For licensing terms and
+** conditions see http://qt.digia.com/licensing.  For further information
+** use the contact form at http://qt.digia.com/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Digia gives you certain additional
+** rights.  These rights are described in the Digia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QPLATFORMTHEME_P_H
+#define QPLATFORMTHEME_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is part of the QPA API and is not meant to be used
+// in applications. Usage of this API may make your code
+// source and binary incompatible with future versions of Qt.
+//
+
+#include <QtCore/QtGlobal>
+
+QT_BEGIN_NAMESPACE
+
+class QPalette;
+
+class Q_GUI_EXPORT QPlatformThemePrivate
+{
+public:
+    QPlatformThemePrivate();
+
+    virtual ~QPlatformThemePrivate();
+
+    void initializeSystemPalette();
+
+    QPalette *systemPalette;
+};
+
+QT_END_NAMESPACE
+
+#endif // QPLATFORMTHEME_P_H
diff --git a/src/platformsupport/themes/genericunix/qgenericunixthemes.cpp b/src/platformsupport/themes/genericunix/qgenericunixthemes.cpp
index 6ea68397b6..4fc542c39a 100644
--- a/src/platformsupport/themes/genericunix/qgenericunixthemes.cpp
+++ b/src/platformsupport/themes/genericunix/qgenericunixthemes.cpp
@@ -42,6 +42,8 @@
 #include "qgenericunixthemes_p.h"
 #include "../../services/genericunix/qgenericunixservices_p.h"
 
+#include "qpa/qplatformtheme_p.h"
+
 #include <QtGui/QPalette>
 #include <QtGui/QFont>
 #include <QtGui/QGuiApplication>
@@ -87,15 +89,27 @@ const char *QGenericUnixTheme::name = "generic";
 static const char defaultSystemFontNameC[] = "Sans Serif";
 enum { defaultSystemFontSize = 9 };
 
+class QGenericUnixThemePrivate : public QPlatformThemePrivate
+{
+public:
+    QGenericUnixThemePrivate()
+        : QPlatformThemePrivate()
+        , systemFont(QLatin1String(defaultSystemFontNameC), defaultSystemFontSize)
+    { }
+
+    const QFont systemFont;
+};
+
 QGenericUnixTheme::QGenericUnixTheme()
-    : m_systemFont(QLatin1String(defaultSystemFontNameC), defaultSystemFontSize)
+    : QPlatformTheme(new QGenericUnixThemePrivate())
 {
 }
 
 const QFont *QGenericUnixTheme::font(Font type) const
 {
+    Q_D(const QGenericUnixTheme);
     if (type == QPlatformTheme::SystemFont)
-        return &m_systemFont;
+        return &d->systemFont;
     return 0;
 }
 
@@ -142,6 +156,93 @@ QVariant QGenericUnixTheme::themeHint(ThemeHint hint) const
 }
 
 #ifndef QT_NO_SETTINGS
+class QKdeThemePrivate : public QPlatformThemePrivate
+{
+public:
+    QKdeThemePrivate(const QString &kdeHome, int kdeVersion)
+        : kdeHome(kdeHome)
+        , kdeVersion(kdeVersion)
+        , toolButtonStyle(Qt::ToolButtonTextBesideIcon)
+        , toolBarIconSize(0)
+    { }
+
+    QString globalSettingsFile() const
+    {
+        return kdeHome + QStringLiteral("/share/config/kdeglobals");
+    }
+
+    void refresh();
+    static void readKdeSystemPalette(const QSettings &kdeSettings, QPalette *pal);
+    static QFont *readKdeFontSetting(const QSettings &settings, const QString &key);
+    static QStringList kdeIconThemeSearchPaths(const QString &kdeHome);
+
+
+    const QString kdeHome;
+    const int kdeVersion;
+
+    ResourceHelper resources;
+    QString iconThemeName;
+    QString iconFallbackThemeName;
+    QStringList styleNames;
+    int toolButtonStyle;
+    int toolBarIconSize;
+};
+
+void QKdeThemePrivate::refresh()
+{
+    resources.clear();
+
+    toolButtonStyle = Qt::ToolButtonTextBesideIcon;
+    toolBarIconSize = 0;
+    styleNames.clear();
+    styleNames << QStringLiteral("Oxygen") << QStringLiteral("fusion") << QStringLiteral("windows");
+    iconFallbackThemeName = iconThemeName = QStringLiteral("oxygen");
+
+    // Read settings file.
+    const QString settingsFile = globalSettingsFile();
+    if (!QFileInfo(settingsFile).isReadable())
+        return;
+
+    const QSettings kdeSettings(settingsFile, QSettings::IniFormat);
+
+    QPalette systemPalette = QPalette();
+    readKdeSystemPalette(kdeSettings, &systemPalette);
+    resources.palettes[QPlatformTheme::SystemPalette] = new QPalette(systemPalette);
+    //## TODO tooltip color
+
+    const QVariant styleValue = kdeSettings.value(QStringLiteral("widgetStyle"));
+    if (styleValue.isValid()) {
+        const QString style = styleValue.toString();
+        if (style != styleNames.front())
+            styleNames.push_front(style);
+    }
+
+    const QVariant themeValue = kdeSettings.value(QStringLiteral("Icons/Theme"));
+    if (themeValue.isValid())
+        iconThemeName = themeValue.toString();
+
+    const QVariant toolBarIconSizeValue = kdeSettings.value(QStringLiteral("ToolbarIcons/Size"));
+    if (toolBarIconSizeValue.isValid())
+        toolBarIconSize = toolBarIconSizeValue.toInt();
+
+    const QVariant toolbarStyleValue = kdeSettings.value(QStringLiteral("ToolButtonStyle"));
+    if (toolbarStyleValue.isValid()) {
+        const QString toolBarStyle = toolbarStyleValue.toString();
+        if (toolBarStyle == QStringLiteral("TextBesideIcon"))
+            toolButtonStyle =  Qt::ToolButtonTextBesideIcon;
+        else if (toolBarStyle == QStringLiteral("TextOnly"))
+            toolButtonStyle = Qt::ToolButtonTextOnly;
+        else if (toolBarStyle == QStringLiteral("TextUnderIcon"))
+            toolButtonStyle = Qt::ToolButtonTextUnderIcon;
+    }
+
+    // Read system font, ignore 'fixed' 'smallestReadableFont'
+    if (QFont *systemFont = readKdeFontSetting(kdeSettings, QStringLiteral("font"))) {
+        resources.fonts[QPlatformTheme::SystemFont] = systemFont;
+    } else {
+        resources.fonts[QPlatformTheme::SystemFont] = new QFont(QLatin1String(defaultSystemFontNameC), defaultSystemFontSize);
+    }
+}
 
 // Reads the color from the KDE configuration, and store it in the
 // palette with the given color role if found.
@@ -158,7 +259,7 @@ static inline bool kdeColor(QPalette *pal, QPalette::ColorRole role,
     return true;
 }
 
-static inline void readKdeSystemPalette(const QSettings &kdeSettings, QPalette *pal)
+void QKdeThemePrivate::readKdeSystemPalette(const QSettings &kdeSettings, QPalette *pal)
 {
     kdeColor(pal, QPalette::Button, kdeSettings, QStringLiteral("Colors:Button/BackgroundNormal"));
     kdeColor(pal, QPalette::Window, kdeSettings, QStringLiteral("Colors:Window/BackgroundNormal"));
@@ -183,14 +284,13 @@ static inline void readKdeSystemPalette(const QSettings &kdeSettings, QPalette *
 
 const char *QKdeTheme::name = "kde";
 
-QKdeTheme::QKdeTheme(const QString &kdeHome, int kdeVersion) :
-    m_kdeHome(kdeHome), m_kdeVersion(kdeVersion),
-    m_toolButtonStyle(Qt::ToolButtonTextBesideIcon), m_toolBarIconSize(0)
+QKdeTheme::QKdeTheme(const QString &kdeHome, int kdeVersion)
+    : QPlatformTheme(new QKdeThemePrivate(kdeHome,kdeVersion))
 {
-    refresh();
+    d_func()->refresh();
 }
 
-static inline QFont *readKdeFontSetting(const QSettings &settings, const QString &key)
+QFont *QKdeThemePrivate::readKdeFontSetting(const QSettings &settings, const QString &key)
 {
     const QVariant fontValue = settings.value(key);
     if (fontValue.isValid()) {
@@ -218,68 +318,8 @@ static inline QFont *readKdeFontSetting(const QSettings &settings, const QString
     return 0;
 }
 
-void QKdeTheme::refresh()
-{
-    m_resources.clear();
 
-    m_toolButtonStyle = Qt::ToolButtonTextBesideIcon;
-    m_toolBarIconSize = 0;
-    m_styleNames.clear();
-    m_styleNames << QStringLiteral("Oxygen") << QStringLiteral("fusion") << QStringLiteral("windows");
-    m_iconFallbackThemeName = m_iconThemeName = QStringLiteral("oxygen");
-
-    // Read settings file.
-    const QString settingsFile = globalSettingsFile();
-    if (!QFileInfo(settingsFile).isReadable())
-        return;
-
-    const QSettings kdeSettings(settingsFile, QSettings::IniFormat);
-
-    QPalette systemPalette = QPalette();
-    readKdeSystemPalette(kdeSettings, &systemPalette);
-    m_resources.palettes[SystemPalette] = new QPalette(systemPalette);
-    //## TODO tooltip color
-
-    const QVariant styleValue = kdeSettings.value(QStringLiteral("widgetStyle"));
-    if (styleValue.isValid()) {
-        const QString style = styleValue.toString();
-        if (style != m_styleNames.front())
-            m_styleNames.push_front(style);
-    }
-
-    const QVariant themeValue = kdeSettings.value(QStringLiteral("Icons/Theme"));
-    if (themeValue.isValid())
-        m_iconThemeName = themeValue.toString();
-
-    const QVariant toolBarIconSizeValue = kdeSettings.value(QStringLiteral("ToolbarIcons/Size"));
-    if (toolBarIconSizeValue.isValid())
-        m_toolBarIconSize = toolBarIconSizeValue.toInt();
-
-    const QVariant toolbarStyleValue = kdeSettings.value(QStringLiteral("ToolButtonStyle"));
-    if (toolbarStyleValue.isValid()) {
-        const QString toolBarStyle = toolbarStyleValue.toString();
-        if (toolBarStyle == QStringLiteral("TextBesideIcon"))
-            m_toolButtonStyle =  Qt::ToolButtonTextBesideIcon;
-        else if (toolBarStyle == QStringLiteral("TextOnly"))
-            m_toolButtonStyle = Qt::ToolButtonTextOnly;
-        else if (toolBarStyle == QStringLiteral("TextUnderIcon"))
-            m_toolButtonStyle = Qt::ToolButtonTextUnderIcon;
-    }
-
-    // Read system font, ignore 'fixed' 'smallestReadableFont'
-    if (QFont *systemFont = readKdeFontSetting(kdeSettings, QStringLiteral("font"))) {
-        m_resources.fonts[SystemFont] = systemFont;
-    } else {
-        m_resources.fonts[SystemFont] = new QFont(QLatin1String(defaultSystemFontNameC), defaultSystemFontSize);
-    }
-}
-
-QString QKdeTheme::globalSettingsFile() const
-{
-    return m_kdeHome + QStringLiteral("/share/config/kdeglobals");
-}
-
-static QStringList kdeIconThemeSearchPaths(const QString &kdeHome)
+QStringList QKdeThemePrivate::kdeIconThemeSearchPaths(const QString &kdeHome)
 {
     QStringList candidates = QStringList(kdeHome);
     const QString kdeDirs = QFile::decodeName(qgetenv("KDEDIRS"));
@@ -298,6 +338,7 @@ static QStringList kdeIconThemeSearchPaths(const QString &kdeHome)
 
 QVariant QKdeTheme::themeHint(QPlatformTheme::ThemeHint hint) const
 {
+    Q_D(const QKdeTheme);
     switch (hint) {
     case QPlatformTheme::UseFullScreenForPopupMenu:
         return QVariant(true);
@@ -306,17 +347,17 @@ QVariant QKdeTheme::themeHint(QPlatformTheme::ThemeHint hint) const
     case QPlatformTheme::DialogButtonBoxLayout:
         return QVariant(2); // QDialogButtonBox::KdeLayout
     case QPlatformTheme::ToolButtonStyle:
-        return QVariant(m_toolButtonStyle);
+        return QVariant(d->toolButtonStyle);
     case QPlatformTheme::ToolBarIconSize:
-        return QVariant(m_toolBarIconSize);
+        return QVariant(d->toolBarIconSize);
     case QPlatformTheme::SystemIconThemeName:
-        return QVariant(m_iconThemeName);
+        return QVariant(d->iconThemeName);
     case QPlatformTheme::SystemIconFallbackThemeName:
-        return QVariant(m_iconFallbackThemeName);
+        return QVariant(d->iconFallbackThemeName);
     case QPlatformTheme::IconThemeSearchPaths:
-        return QVariant(kdeIconThemeSearchPaths(m_kdeHome));
+        return QVariant(d->kdeIconThemeSearchPaths(d->kdeHome));
     case QPlatformTheme::StyleNames:
-        return QVariant(m_styleNames);
+        return QVariant(d->styleNames);
     case QPlatformTheme::KeyboardScheme:
         return QVariant(int(KdeKeyboardScheme));
     default:
@@ -325,6 +366,18 @@ QVariant QKdeTheme::themeHint(QPlatformTheme::ThemeHint hint) const
     return QPlatformTheme::themeHint(hint);
 }
 
+const QPalette *QKdeTheme::palette(Palette type) const
+{
+    Q_D(const QKdeTheme);
+    return d->resources.palettes[type];
+}
+
+const QFont *QKdeTheme::font(Font type) const
+{
+    Q_D(const QKdeTheme);
+    return d->resources.fonts[type];
+}
+
 QPlatformTheme *QKdeTheme::createKdeTheme()
 {
     // Check for version >= 4 and determine home folder from environment,
@@ -361,8 +414,18 @@ QPlatformTheme *QKdeTheme::createKdeTheme()
 
 const char *QGnomeTheme::name = "gnome";
 
+class QGnomeThemePrivate : public QPlatformThemePrivate
+{
+public:
+    QGnomeThemePrivate()
+        : systemFont(QLatin1Literal(defaultSystemFontNameC), defaultSystemFontSize)
+    {}
+
+    const QFont systemFont;
+};
+
 QGnomeTheme::QGnomeTheme()
-   : m_systemFont(QLatin1String(defaultSystemFontNameC), defaultSystemFontSize)
+    : QPlatformTheme(new QGnomeThemePrivate())
 {
 }
 
@@ -393,8 +456,10 @@ QVariant QGnomeTheme::themeHint(QPlatformTheme::ThemeHint hint) const
 
 const QFont *QGnomeTheme::font(Font type) const
 {
+    Q_D(const QGnomeTheme);
     if (type == QPlatformTheme::SystemFont)
-        return &m_systemFont;
+        return &d->systemFont;
+
     return 0;
 }
 
diff --git a/src/platformsupport/themes/genericunix/qgenericunixthemes_p.h b/src/platformsupport/themes/genericunix/qgenericunixthemes_p.h
index b0ac13efe4..03445776f4 100644
--- a/src/platformsupport/themes/genericunix/qgenericunixthemes_p.h
+++ b/src/platformsupport/themes/genericunix/qgenericunixthemes_p.h
@@ -61,8 +61,11 @@ public:
     QFont *fonts[QPlatformTheme::NFonts];
 };
 
+class QGenericUnixThemePrivate;
+
 class QGenericUnixTheme : public QPlatformTheme
 {
+    Q_DECLARE_PRIVATE(QGenericUnixTheme)
 public:
     QGenericUnixTheme();
 
@@ -75,55 +78,39 @@ public:
     static QStringList xdgIconThemePaths();
 
     static const char *name;
-
-private:
-    const QFont m_systemFont;
 };
 
 #ifndef QT_NO_SETTINGS
+class QKdeThemePrivate;
+
 class QKdeTheme : public QPlatformTheme
 {
+    Q_DECLARE_PRIVATE(QKdeTheme)
     QKdeTheme(const QString &kdeHome, int kdeVersion);
 public:
 
     static QPlatformTheme *createKdeTheme();
     virtual QVariant themeHint(ThemeHint hint) const;
 
-    virtual const QPalette *palette(Palette type = SystemPalette) const
-        { return m_resources.palettes[type]; }
+    virtual const QPalette *palette(Palette type = SystemPalette) const;
 
-    virtual const QFont *font(Font type) const
-        { return m_resources.fonts[type]; }
+    virtual const QFont *font(Font type) const;
 
     static const char *name;
-
-private:
-    QString globalSettingsFile() const;
-    void refresh();
-
-    const QString m_kdeHome;
-    const int m_kdeVersion;
-
-    ResourceHelper m_resources;
-    QString m_iconThemeName;
-    QString m_iconFallbackThemeName;
-    QStringList m_styleNames;
-    int m_toolButtonStyle;
-    int m_toolBarIconSize;
 };
 #endif // QT_NO_SETTINGS
 
+class QGnomeThemePrivate;
+
 class QGnomeTheme : public QPlatformTheme
 {
+    Q_DECLARE_PRIVATE(QGnomeTheme)
 public:
     QGnomeTheme();
     virtual QVariant themeHint(ThemeHint hint) const;
     virtual const QFont *font(Font type) const;
 
     static const char *name;
-
-private:
-    const QFont m_systemFont;
 };
 
 QPlatformTheme *qt_createUnixTheme();
diff --git a/src/widgets/styles/qfusionstyle.cpp b/src/widgets/styles/qfusionstyle.cpp
index bfc22807a0..c4c964f451 100644
--- a/src/widgets/styles/qfusionstyle.cpp
+++ b/src/widgets/styles/qfusionstyle.cpp
@@ -1896,50 +1896,14 @@ void QFusionStyle::drawControl(ControlElement element, const QStyleOption *optio
     }
 }
 
+extern QPalette qt_fusionPalette();
+
 /*!
   \reimp
 */
 QPalette QFusionStyle::standardPalette () const
 {
-    QPalette palette = QCommonStyle::standardPalette();
-    palette.setBrush(QPalette::Active, QPalette::Highlight, QColor(48, 140, 198));
-    palette.setBrush(QPalette::Inactive, QPalette::Highlight, QColor(145, 141, 126));
-    palette.setBrush(QPalette::Disabled, QPalette::Highlight, QColor(145, 141, 126));
-
-    QColor backGround(239, 235, 231);
-
-    QColor light = backGround.lighter(150);
-    QColor base = Qt::white;
-    QColor dark = QColor(170, 156, 143).darker(110);
-    dark = backGround.darker(150);
-    QColor darkDisabled = QColor(209, 200, 191).darker(110);
-
-    //### Find the correct disabled text color
-    palette.setBrush(QPalette::Disabled, QPalette::Text, QColor(190, 190, 190));
-
-    palette.setBrush(QPalette::Window, backGround);
-    palette.setBrush(QPalette::Mid, backGround.darker(130));
-    palette.setBrush(QPalette::Light, light);
-
-    palette.setBrush(QPalette::Active, QPalette::Base, base);
-    palette.setBrush(QPalette::Inactive, QPalette::Base, base);
-    palette.setBrush(QPalette::Disabled, QPalette::Base, backGround);
-
-    palette.setBrush(QPalette::Midlight, palette.mid().color().lighter(110));
-
-    palette.setBrush(QPalette::All, QPalette::Dark, dark);
-    palette.setBrush(QPalette::Disabled, QPalette::Dark, darkDisabled);
-
-    QColor button = backGround;
-
-    palette.setBrush(QPalette::Button, button);
-
-    QColor shadow = dark.darker(135);
-    palette.setBrush(QPalette::Shadow, shadow);
-    palette.setBrush(QPalette::Disabled, QPalette::Shadow, shadow.lighter(150));
-    palette.setBrush(QPalette::HighlightedText, QColor(QRgb(0xffffffff)));
-
-    return palette;
+    return qt_fusionPalette();
 }
 
 /*!