option = {
    polar: {
        radiusAxis: {
            type: 'category',
            data: ['A', 'B', 'C', 'D', 'E'],
            axisLabel: {
                show: true,
                rich: {
                    A: {
                        color: 'red',
                        fontSize: 14,
                        fontWeight: 'bold',
                        fontStyle: 'italic',
                        textBorderColor: 'black',
                        textBorderWidth: 2,
                        // 其他富文本样式配置...
                    },
                    B: {
                        color: 'green',
                        fontSize: 12,
                        // 其他富文本样式配置...
                    },
                    // 其他类目的富文本样式配置...
                },
            },
            // 其他配置...
        },
        // 其他配置...
    },
    // 其他配置...
};