HighCharts中Y轴颜色设置

yAxis: [{

title: {
text: '', style: { color: '#2EBBD9' }
},
labels: {
formatter: function () {
return '<div style="color:red">' + this.value + '</div>';
}
},
useHTML: true
}, {

title: {
text: ' '
},
opposite: true
}, {
lineWidth: 1,
lineColor: "green",
title: {

text: ' '
},
opposite: true
}]