QML ValueAxis找不到更改标签颜色的方法

import QtQuick.Controls 2.15

Item {
    property color labelColor: "black" // 自定义标签颜色

    ValueAxis {
        id: valueAxis
        style: ValueAxisStyle {
            labelColor: parent.labelColor
        }
    }
}

import QtQuick 2.15
import QtQuick.Controls 2.15

ApplicationWindow {
    visible: true
    width: 400
    height: 400

    CustomValueAxisStyle {
        id: customValueAxis
        labelColor: "red" // 自定义标签颜色为红色
    }

    ChartView {
        anchors.fill: parent
        theme: ChartView.ChartThemeLight

        ValueAxis {
            id: valueAxis
            min: 0
            max: 100
            tickCount: 5
            labelsVisible: true
            style: customValueAxis.valueAxis.style
        }

        LineSeries {
            axisX: valueAxis
            axisY: valueAxis
            XYPoint { x: 0; y: 10 }
            XYPoint { x: 1; y: 20 }
            XYPoint { x: 2; y: 30 }
            XYPoint { x: 3; y: 40 }
            XYPoint { x: 4; y: 50 }
        }
    }
}