How to set QwtPlotItems in .qss file

Hi,

I'm trying to use different theme in my application, say, normal.qss and dark.qss

So I want to switch color of QwtPlotMarker, and QwtLegend items, tried different way, but didnt worked.
(say, dark.qss)

Code:

---

QwtLegend
{
	border: 1px solid gray;
	background: white;
}
 
QwtPlotMarker
{
	color: white;
}
 
QwtPlotMarker:plotItem
{
	color: white;
}

---

Thanks

Found solution for this, use below and its works, this will set color for your legends background

Code:

---

QwtLegendLabel
{
	border: 1px solid gray;
	background: gray;
}

---