QTableWidget set the Background of header Cell

[Schiho]

I know how to set the Horizontal Headers background color, but how can i set the Headers Background Color for a specified Row? In this example, say i want to have the Header Row with the Label "3" to be red?

Example what i get now
link text

import sys
from PyQt4 import QtCore, QtGui
from PyQt4.QtGui import *



class Example(QtGui.QWidget):

    def __init__(self):
        super(Example, self).__init__()
        self.initUI()


    def initUI(self):
        self.setGeometry(300, 300, 250, 150)
        self.rigTable = QTableWidget(1, 3, self)
        style = "::section {""background-color: lightblue; }"
        self.rigTable.horizontalHeader().setStyleSheet(style)
        self.rigTable.setShowGrid(False)

        self.rigTable.setCellWidget(0, 0, QLabel("A"))
        self.rigTable.setCellWidget(0, 1,  QLabel("B"))      

        self.show()


def main():
    app = QtGui.QApplication(sys.argv)
    ex = Example()
    sys.exit(app.exec_())


if __name__ == '__main__':
    main()