Problem with Gradient and QTreeWidget in QPlastiqueStyle

if you use a QTreeWidget and set an gradient inside you will get an
display problem with the QPlastique Style. The Icon with the "+" will get
the background-color black. With Cleanlooks it's fine.

QTreeWidget

{ background-color: qlineargradient(x1:0, y1:0, x2:0, y2:3, stop: 0 white, stop: 0.8 #D5EDFF);}