Feature Request: No way to revert the background color of headerItems of TableWidget to default depending on style used

It seems that there is no way to revert background colour to default for headers of QTableWidget. Like, if the user is changing color by

table->verticalHeaderItem(0)->setBackground(QBrush(Qt::red));

then there is no way to revert it to default depending on style.
setBackground(QBrush()) helps with "Windows" style, but with "Fusion", QBrush() is not helping.

The same applies for QListWidget and QTreeWidget