message: Consistently use outlineBrush() for drawing borders
diff: @@ -1630,7 +1630,7 @@ void RDStyle::drawControl(ControlElement control, const QStyleOption *opt, QPain
  qreal lineWidth = qMax(1, frame->lineWidth);
  p->save();
  - p->setPen(QPen(opt->palette.brush(widget->foregroundRole()), lineWidth));
  + p->setPen(QPen(outlineBrush(opt->palette), lineWidth));
  qreal adjust = 0.5 * lineWidth;
  