zIndex

Specifies the zIndex of a plot band relative to all axis lines and bands.

axisX: {
	plotBands: [
		{ start: 3, end: 5, drawColor: 'green', zIndex: 3},
		{ start: 8, end: 10, drawColor: 'red', zIndex: 9 }
	]
}

This setting is demonstrated in the following example.