诡异的visualMapecharts 配置项内容和展示

1000以下应该是标记红色的,为什么在这里标记成了1000~2000的黄色

配置项如下
      option = {
    "animation": false,
    "legend": {
        "show": true,
        "left": "center",
        "data": ["功率"],
        "y": "5%",
        "textStyle": {
            "color": "#fff"
        }
    },
    "tooltip": {
        "trigger": "axis"
    },
    "grid": [{
        "top": 39.43333333333334,
        "height": "70%",
        "left": "13%",
        "right": "13%"
    }],
    "xAxis": {
        "type": "time",
        "show": true,
        "axisLine": {
            "lineStyle": {
                "color": "#ccc"
            }
        },
        "axisLabel": {
            "fontSize": 13.144444444444446
        },
        "splitLine": {
            "show": false
        },
        "axisPointer": {
            "show": true,
            "lineStyle": {
                "color": "#fff",
                "width": 1
            }
        }
    },
    "visualMap": [{
        "show": true,
        "seriesIndex": 0,
        "pieces": [{
            "max": 1000,
            "color": "#7e0023"
        }, {
            "color": "rgb(252,158,45)",
            "max": 2000,
            "min": 1000
        }],
        "outOfRange": {
            "color": "#0ff"
        }
    }],
    "yAxis": [{
        "type": "value",
        "scale": true,
        "splitLine": {
            "show": false
        },
        "nameTextStyle": {
            "color": "#ccc",
            "fontSize": 11.266666666666667
        },
        "axisTick": {
            "show": true
        },
        "axisLabel": {
            "fontSize": 11.266666666666667
        },
        "axisLine": {
            "lineStyle": {
                "color": "#0ff",
                "fontSize": 11.266666666666667
            }
        },
        "name": "kW"
    }],
    "series": [{
        "smooth": true,
        "name": "功率",
        "type": "line",
        "symbolSize": 0,
        "yAxisIndex": 0,
        "lineStyle": {
            "normal": {
                "width": 1.2
            }
        },
        "itemStyle": {
            "normal": {
                "color": "#0ff"
            }
        },
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}
    
截图如下