diff --git a/share/qtcreator/themes/dark.creatortheme b/share/qtcreator/themes/dark.creatortheme
index 7f8b3cf5c17..edf7217aed0 100644
--- a/share/qtcreator/themes/dark.creatortheme
+++ b/share/qtcreator/themes/dark.creatortheme
@@ -244,6 +244,7 @@ FlatProjectsMode=true
 FlatMenuBar=true
 ToolBarIconShadow=true
 WindowColorAsBase=false
+DarkUserInteface=true
 
 [Gradients]
 DetailsWidgetHeaderGradient\1\color=00000000
diff --git a/share/qtcreator/themes/default.creatortheme b/share/qtcreator/themes/default.creatortheme
index d4668363767..7dced12a0a6 100644
--- a/share/qtcreator/themes/default.creatortheme
+++ b/share/qtcreator/themes/default.creatortheme
@@ -216,6 +216,7 @@ FlatProjectsMode=false
 FlatMenuBar=false
 ToolBarIconShadow=true
 WindowColorAsBase=false
+DarkUserInteface=false
 
 [Gradients]
 DetailsWidgetHeaderGradient\1\color=ffffffff
diff --git a/share/qtcreator/themes/flat-dark.creatortheme b/share/qtcreator/themes/flat-dark.creatortheme
index ad2a0888187..632388bd783 100644
--- a/share/qtcreator/themes/flat-dark.creatortheme
+++ b/share/qtcreator/themes/flat-dark.creatortheme
@@ -248,6 +248,7 @@ FlatProjectsMode=true
 FlatMenuBar=true
 ToolBarIconShadow=true
 WindowColorAsBase=false
+DarkUserInteface=true
 
 [Gradients]
 DetailsWidgetHeaderGradient\1\color=00000000
diff --git a/share/qtcreator/themes/flat-light.creatortheme b/share/qtcreator/themes/flat-light.creatortheme
index 1390a3135e0..bd05799c410 100644
--- a/share/qtcreator/themes/flat-light.creatortheme
+++ b/share/qtcreator/themes/flat-light.creatortheme
@@ -225,6 +225,7 @@ FlatProjectsMode=false
 FlatMenuBar=false
 ToolBarIconShadow=false
 WindowColorAsBase=false
+DarkUserInteface=false
 
 [Gradients]
 DetailsWidgetHeaderGradient\1\color=00000000
diff --git a/share/qtcreator/themes/flat.creatortheme b/share/qtcreator/themes/flat.creatortheme
index f9cfa7b7f86..cfca28f143d 100644
--- a/share/qtcreator/themes/flat.creatortheme
+++ b/share/qtcreator/themes/flat.creatortheme
@@ -223,6 +223,7 @@ FlatProjectsMode=false
 FlatMenuBar=false
 ToolBarIconShadow=true
 WindowColorAsBase=false
+DarkUserInteface=false
 
 [Gradients]
 DetailsWidgetHeaderGradient\1\color=00000000
diff --git a/src/libs/utils/theme/theme.cpp b/src/libs/utils/theme/theme.cpp
index fc3018fc1dd..4d9aeae3565 100644
--- a/src/libs/utils/theme/theme.cpp
+++ b/src/libs/utils/theme/theme.cpp
@@ -27,6 +27,9 @@
 #include "theme_p.h"
 #include "../algorithm.h"
 #include "../qtcassert.h"
+#ifdef Q_OS_MACOS
+#import "theme_mac.h"
+#endif
 
 #include <QApplication>
 #include <QFileInfo>
@@ -69,6 +72,14 @@ void setCreatorTheme(Theme *theme)
         return;
     delete m_creatorTheme;
     m_creatorTheme = theme;
+
+#ifdef Q_OS_MACOS
+    // Match the native UI theme and palette with the creator
+    // theme by forcing light aqua for light creator themes.
+    if (!theme->flag(Theme::DarkUserInteface))
+        Internal::forceMacOSLightAquaApperance();
+#endif
+
     setThemeApplicationPalette();
 }
 
diff --git a/src/libs/utils/theme/theme.h b/src/libs/utils/theme/theme.h
index 49c7c881ad2..7bca48b9ea3 100644
--- a/src/libs/utils/theme/theme.h
+++ b/src/libs/utils/theme/theme.h
@@ -337,7 +337,8 @@ public:
         FlatProjectsMode,
         FlatMenuBar,
         ToolBarIconShadow,
-        WindowColorAsBase
+        WindowColorAsBase,
+        DarkUserInteface
     };
 
     Q_INVOKABLE bool flag(Flag f) const;
diff --git a/src/libs/utils/theme/theme_mac.h b/src/libs/utils/theme/theme_mac.h
new file mode 100644
index 00000000000..55e6d12bc02
--- /dev/null
+++ b/src/libs/utils/theme/theme_mac.h
@@ -0,0 +1,34 @@
+/****************************************************************************
+**
+** Copyright (C) 2018 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of Qt Creator.
+**
+** 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 The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3 as published by the Free Software
+** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-3.0.html.
+**
+****************************************************************************/
+
+#pragma once
+
+namespace Utils {
+namespace Internal {
+
+void forceMacOSLightAquaApperance();
+
+} // Internal
+} // Utils
diff --git a/src/libs/utils/theme/theme_mac.mm b/src/libs/utils/theme/theme_mac.mm
new file mode 100644
index 00000000000..6a940240f12
--- /dev/null
+++ b/src/libs/utils/theme/theme_mac.mm
@@ -0,0 +1,48 @@
+/****************************************************************************
+**
+** Copyright (C) 2018 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of Qt Creator.
+**
+** 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 The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3 as published by the Free Software
+** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-3.0.html.
+**
+****************************************************************************/
+
+#include "theme_mac.h"
+
+#include <qglobal.h>
+
+#include <AppKit/AppKit.h>
+
+#if !QT_MACOS_PLATFORM_SDK_EQUAL_OR_ABOVE(__MAC_10_14)
+@interface NSApplication (MojaveForwardDeclarations)
+@property (strong) NSAppearance *appearance NS_AVAILABLE_MAC(10_14);
+@end
+#endif
+
+namespace Utils {
+namespace Internal {
+
+void forceMacOSLightAquaApperance()
+{
+    if (__builtin_available(macOS 10.14, *))
+        NSApp.appearance = [NSAppearance appearanceNamed:NSAppearanceNameAqua];
+}
+
+} // Internal
+} // Utils
diff --git a/src/libs/utils/utils-lib.pri b/src/libs/utils/utils-lib.pri
index 0cd5f68e123..41d8745baac 100644
--- a/src/libs/utils/utils-lib.pri
+++ b/src/libs/utils/utils-lib.pri
@@ -270,8 +270,10 @@ RESOURCES += $$PWD/utils.qrc
 
 osx {
     HEADERS += \
+        $$PWD/theme/theme_mac.h \
         $$PWD/fileutils_mac.h
     OBJECTIVE_SOURCES += \
+        $$PWD/theme/theme_mac.mm \
         $$PWD/fileutils_mac.mm \
         $$PWD/processhandle_mac.mm
     LIBS += -framework Foundation -framework AppKit
diff --git a/src/libs/utils/utils.qbs b/src/libs/utils/utils.qbs
index 599e9972c3f..2ada52c17ee 100644
--- a/src/libs/utils/utils.qbs
+++ b/src/libs/utils/utils.qbs
@@ -314,6 +314,15 @@ Project {
             ]
         }
 
+        Group {
+            name: "Theme_macos"
+            condition: qbs.targetOS.contains("macos")
+            prefix: "theme/"
+            files: [
+                "theme_mac.h", "theme_mac.mm",
+            ]
+        }
+
         Group {
             name: "ProcessHandle_macos"
             condition: qbs.targetOS.contains("macos")