1. 需求

• 改变titleText的颜色，将下图mV的颜色改为红色
  
  

2.代码

关键代码：titleText: "<font color='red'>mV</font>"

//坐标轴 mv
ValueAxis{id: _mAxisMvmin: 0max: 20tickCount: 6labelsFont.pixelSize: 15labelFormat: '%.1f'titleText: "<font color='red'>mV</font>"color: "MidnightBlue"labelsColor: color}