I want to show only angle lines in QPolarChart

[MrHandSOme]

Hello community,
I'm creating a new qpolarchart. In this Azimuth Axis, I want to make the circle line a different color or I don't want it to appear.

 _azimuthAxisDetail->setLineVisible(true);
 _azimuthAxisDetail->setGridLineVisible(false);

_azimuthAxisDetail->setLinePenColor(Qt::green);
_azimuthAxisDetail->setGridLineColor(Qt::white);

When I try this code or something like this, the colors of the outermost circle and the tick lines are the same color.

This is my chart:

and This is what i want: