Hi, is it possible to add color of special grid line in QCPPolarAxisAngular class.? the way i found out is change qcustomplot.cpp

void QCPPolarGrid::drawAngularGrid(QCPPainter *painter, const QPointF &center, double radius, const QVector<QPointF> &ticksCosSin, const QPen &pen)
{
  if (ticksCosSin.isEmpty()) return;
  
  for (int i=0; i<ticksCosSin.size(); ++i) {
    if(i ==0  || i == 7 || i == 13 || i == 20 || i == 26 || i == 33 || i == 39) painter->setPen(QPen(QColor(255, 0, 255), 2, Qt::SolidLine));
    else painter->setPen(pen);
    painter->drawLine(center, center+ticksCosSin.at(i)*radius);
  }
}

Is there any way without change qcustomplot.cpp