Windows/Vista Style: QMenu text color is not correctly set by stylesheet

#include <QApplication>
#include <QMenu>
#include <QCursor>

class Widget : public QWidget
{
    void mousePressEvent( QMouseEvent * event )
    {
        QMenu *menu = new QMenu();
        menu->setStyleSheet("QMenu{color: red;}");
        menu->addAction("Cut",0,0,QKeySequence::Cut);
        menu->addAction("Copy",0,0,QKeySequence::Copy);
        menu->addAction("Paste",0,0,QKeySequence::Paste);
        menu->exec(QCursor::pos());
    }
};

int main(int argc, char *argv[])
{
    QApplication a(argc, argv);
    Widget w;
    w.show();
    return a.exec();
}