Android: QToolBar doesn't forward stylesheet to children

[Gloweye]

Im building an android app, and at the top the toolbar needs a color. It's got two buttons, a label and two qwidgets on Sizepolicy::Expanding to center the label in the middle.

On PC, this works as expected and I get the following:

On Android, I get this:

My style sheet is the most simple one:
QToolBar {
background: red;
}

How can I make the child widgets inherit the background color on android ?