set color in QTreeWidgetItem text

[mattia]

Hello, i have a QTreeWidgetItem * item and i'd like to set the color font in red and the font style in bold.
I made in this way

QFont font("" , 9 , QFont::Bold );
item->setFont( 0,  font );

QFont font("" , 9 , QFont::Bold );
item->setFont( 0,  font );

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but i dont know how to set the font in red color, QTreeWidgetItem does not have palette() and setPalette() methods and i dont know another way to do it.
any hint?
thx