title: In a QTableWidget, changing the text color of the selected row
body: <p>I'm using a QTableWidget to display several rows. Some of these rows should reflect an error and their text color is changed :</p>
  
  <p>Rows reflecting that there is no error are displayed with a default color (black text on white background on my computer).<br>
  Rows reflecting that there is an error are displayed with a red text color (which is red text on white background on my computer).</p>
  
  <p>This is all fine as long as there is no selection. As soon as a row is selected, no matter of the unselected text color, the text color becomes always white (on my computer) over a blue background.</p>
  
  <p>This is something I would like to change to get the following :<br>
  When a row is selected, if the row is reflecting there is no error, I would like it to be displayed with white text on blue background (default behavior).<br>
  If the row is reflecting an error and is selected, I would like it to be displayed with red text on blue background.</p>
  
  <p>So far I have only been able to change the selection color for the whole QTableWidget, which is not what I want !</p>