So, you want the white Theme, but a black Binder background-color?
On the Windows platform, you’ll have to adjust the Binder background-color to black or transparent in the QSS-Stylesheet of the White Theme:
Update the color code to match the one in the Appearance options at the bottom of the section where TreeView::branch selectors are gathered:
QTreeView::branch:selected:active,
QTreeView::branch:selected:!active {
background-color: black;
}
and the Binder will look in one piece again.
Alternatively, set the background for the Binder in the QSS Stylesheet to transparent:
QTreeView::branch:selected:active,
QTreeView::branch:selected:!active {
background-color: transparent;
}
and the Binder will look in one piece again, as well.
This may be of interest too:
Hope this helps