Fix warn colour in dark mode

Signed-off-by: Claudio Cambra <claudio.cambra@gmail.com>

src/gui/folderwizard.cpp

@@ -77,6 +77,8 @@ FolderWizardLocalPath::FolderWizardLocalPath(const AccountPtr &account)
 
     _ui.warnLabel->setTextFormat(Qt::RichText);
     _ui.warnLabel->hide();
+
+    changeStyle();
 }
 
 FolderWizardLocalPath::~FolderWizardLocalPath() = default;
@@ -141,6 +143,31 @@ void FolderWizardLocalPath::slotChooseLocalFolder()
     emit completeChanged();
 }
 
+
+void FolderWizardLocalPath::changeEvent(QEvent *e)
+{
+    switch (e->type()) {
+    case QEvent::StyleChange:
+    case QEvent::PaletteChange:
+    case QEvent::ThemeChange:
+        // Notify the other widgets (Dark-/Light-Mode switching)
+        changeStyle();
+        break;
+    default:
+        break;
+    }
+
+    FormatWarningsWizardPage::changeEvent(e);
+}
+
+void FolderWizardLocalPath::changeStyle()
+{
+    const auto warnYellow = Theme::isDarkColor(QGuiApplication::palette().base().color()) ? QColor(63, 63, 0) : QColor(255, 255, 192);
+    auto modifiedPalette = _ui.warnLabel->palette();
+    modifiedPalette.setColor(QPalette::Window, warnYellow);
+    _ui.warnLabel->setPalette(modifiedPalette);
+}
+
 // =================================================================================
 FolderWizardRemotePath::FolderWizardRemotePath(const AccountPtr &account)
     : FormatWarningsWizardPage()

src/gui/folderwizard.h

@@ -60,10 +60,16 @@ public:
     void cleanupPage() override;
 
     void setFolderMap(const Folder::Map &fm) { _folderMap = fm; }
+
+protected:
+    void changeEvent(QEvent *) override;
+
 protected slots:
     void slotChooseLocalFolder();
 
 private:
+    void changeStyle();
+
     Ui_FolderWizardSourcePage _ui;
     Folder::Map _folderMap;
     AccountPtr _account;