setUnifiedTitleAndToolBarOnMac - incorrect color on QTabBar - Mac OS 10.6

#include <QtGui>

int main(int argc, char **argv)
{
    QApplication app(argc, argv);
    QMainWindow main;

    QToolBar *mytool = main.addToolBar("this is a toolbar");
    mytool->addAction("check this out");

    main.setUnifiedTitleAndToolBarOnMac(true);

    QTabBar* tabbar = new QTabBar(&main);
//    tabbar->setShape(QTabBar::RoundedNorth);
//    tabbar->setFocusPolicy(Qt::NoFocus);
//    tabbar->setTabsClosable(true);
//    tabbar->setExpanding(false);
    tabbar->setDocumentMode(true);
//    tabbar->setMovable(true);
//    tabbar->setUsesScrollButtons(true);

    tabbar->addTab("tab one");
    tabbar->addTab("tab two");

    main.setCentralWidget(tabbar);
    main.show();

    return app.exec();
}