Change color of labels in status Bar

[giusepped]

I wouldl like to change the color of a label in the statusBar

statusLabelWarning = new QLabel;
  statusLabelWarning->setPixmap( warningPixmap);

statusLabelWarning = new QLabel;
  statusLabelWarning->setPixmap( warningPixmap);

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warningPixmap is a member variable.
When I need to change the color

statusLabelWarning->setText(tr("Rad. stimata"));
warningPixmap.fill(Qt::red);

statusLabelWarning->setText(tr("Rad. stimata"));
warningPixmap.fill(Qt::red);

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but nothing happens.
I am missing something?
G