color property
Color of the minor tick lines.
Defaults to null.
Widget build(BuildContext context) {
   return Container(
       child: SfCartesianChart(
           primaryXAxis: NumericAxis(
           minorTicksPerInterval: 5,
           minorTickLines: MinorTickLines(
           color:Colors.red,
          )
        )
       )
    );
}
Implementation
final Color? color;