Change the selection color of a QTableWidget

The default is for the selected row to be colored gray if the QTableWidget does not have focus, and orange if it does have focus. I would like to, instead, make the selected row be red whether or not the widget has focus. I tried adding this to the style sheet:

QTableWidget{ selection-background-color: red}

I also tried

QTableWidget:edit-focus{ selection-background-color: red} 

and

QTableWidget:focus{ selection-background-color: red} 

but none of them seem to turn anything red, it still seems to remain orange if focused and gray if not. What properties do I have to set to make the selected row always the same color, whether or not it has focus?

Thanks,

David