How can I change the color and font of QLineEdit?

Here is my code:

```
self.lineEdit = QtGui.QLineEdit(widget)
self.lineEdit.setText("enter keywords here") #I want this to be in italics and in brown color

```

The `setText` line from [Documentation](http://pyqt.sourceforge.net/Docs/PyQt4/qlineedit.html#setText) says the text inside is of QString how can I change it's font and color?