Javascript Amcharts面积图集单个线段（线系列）颜色

我用Amcharts制作了一些面积图，但我想分别给每个线段（直线系列）上色

我在一个要测试的段中添加了propertyFields，但无法让它显示测试颜色（黑色），下面是图表的完整代码，放在div id#chartdiv1中

let chart = am4core.createFromConfig({
    "data": [{
     "category": 0.5,
     "value1": 8,
     "value2": 16.4,
     "value3": 24,
     "value4": 34,
     "value5": 50,
     "value6": 70
 }, {
     "category": 1,
     "value1": 8,
     "value2": 16.4,
     "value3": 24,
     "value4": 34,
     "value5": 50,
     "value6": 70
 }, {
     "category": 1.5,
     "value1": 8,
     "value2": 16.4,
     "value3": 24,
     "value4": 34,
     "value5": 50,
     "value6": 70
 
 }, {
     "category": 2,
     "value1": 8,
     "value2": 16.4,
     "value3": 24,
     "value4": 34,
     "value5": 50,
     "value6": 70
 }, {
     "category": 2.5,
     "value1": 8,
     "value2": 16.4,
     "value3": 24,
     "value4": 34,
     "value5": 50,
     "value6": 70
 }, {
     "category": 3,
     "value1": 6.5,
     "value2": 16.4,
     "value3": 24,
     "value4": 34,
     "value5": 50,
     "value6": 70
 }, {
     "category": 3.5,
     "value1": 5,
     "value2": 16.4,
     "value3": 24,
     "value4": 34,
     "value5": 50,
     "value6": 70
 }, {
     "category": 4,
     "value1": 3.9,
     "value2": 16.4,
     "value3": 24,
     "value4": 34,
     "value5": 50,
     "value6": 70
 },  {
    "category": 4.5,
    "value1": "x",
    "value2": 16.4,
    "value3": 24,
    "value4": 34,
    "value5": 50,
    "value6": 70
}, {
    "category": 5,
    "value1": "x",
    "value2": 16.4,
    "value3": 24,
    "value4": 34,
    "value5": 50,
    "value6": 70
}, {
    "category": 5.5,
    "value1": "x",
    "value2": 16.4,
    "value3": 24,
    "value4": 34,
    "value5": 50,
    "value6": 64
}, {
    "category": 6,
    "value1": "x",
    "value2": 14.4,
    "value3": 21,
    "value4": 34,
    "value5": 50,
    "value6": 59
}, {
    "category": 6.5,
    "value1": "x",
    "value2": 12.5,
    "value3": 19,
    "value4": 34,
    "value5": 50,
    "value6": 54
}, {
    "category": 7,
    "value1": "x",
    "value2": 11,
    "value3": 16,
    "value4": 31.6,
    "value5": 49.7,
    "value6": 49.7
}, {
    "category": 7.5,
    "value1": "x",
    "value2": 9.5,
    "value3": 15,
    "value4": 28.5,
    "value5": 45.9,
    "value6": 45.9
}, {
    "category": 8,
    "value1": "x",
    "value2": 8.6,
    "value3": 14,
    "value4": 25.8,
    "value5": 41.5,
    "value6": 41.5
}, {
    "category": 8.5,
    "value1": "x",
    "value2": 7.6,
    "value3": 13,
    "value4": 23.8,
    "value5": 38,
    "value6": 38
},  {
    "category": 9,
    "value1": "x",
    "value2": 6.7,
    "value3": 11,
    "value4": 21.1,
    "value5": 35,
    "value6": 35
}, {
    "category": 9.5,
    "value1": "x",
    "value2": 6.1,
    "value3": 10,
    "value4": 19.2,
    "value5": 32,
    "value6": 35
}, {
    "category": 10,
    "value1": "x",
    "value2": 5.5,
    "value3": 9,
    "value4": 17.6,
    "value5": 29.5,
    "value6": 29.5
}, {
    "category": 10.5,
    "value1": "x",
    "value2": "x",
    "value3": 8,
    "value4": 16.1,
    "value5": 27,
    "value6": 27
}, {
    "category": 11,
    "value1": "x",
    "value2": "x",
    "value3": 7,
    "value4": 14.7,
    "value5": 25.5,
    "value6": 25.5
}, {
    "category": 11.5,
    "value1": "x",
    "value2": "x",
    "value3": 7,
    "value4": 13.6,
    "value5": 23,
    "value6": 23
}, {
    "category": 12,
    "value1": "x",
    "value2": "x",
    "value3": 6,
    "value4": 12.5,
    "value5": 21.5,
    "value6": 21.5
}, {
    "category": 12.5,
    "value1": "x",
    "value2": "x",
    "value3": "x",
    "value4": 11.4,
    "value5": 20,
    "value6": 20
},{
    "category": 13,
    "value1": "x",
    "value2": "x",
    "value3": "x",
    "value4": 10.6,
    "value5": 18.5,
    "value6": 18.5
},  {
    "category": 13.5,
    "value1": "x",
    "value2": "x",
    "value3": "x",
    "value4": 9.8,
    "value5": 17,
    "value6": 17
}, {
    "category": 14,
    "value1": "x",
    "value2": "x",
    "value3": "x",
    "value4": 9.1,
    "value5": 16,
    "value6": 16
},{
    "category": 14.5,
    "value1": "x",
    "value2": "x",
    "value3": "x",
    "value4": "x",
    "value5": 14.5,
    "value6": 14.5
},{
    "category": 15,
    "value1": "x",
    "value2": "x",
    "value3": "x",
    "value4": "x",
    "value5": 14,
    "value6": 14
},  {
    "category": 15.5,
    "value1": "x",
    "value2": "x",
    "value3": "x",
    "value4": "x",
    "value5": 13,
    "value6": 13
},  {
    "category": 16,
    "value1": "x",
    "value2": "x",
    "value3": "x",
    "value4": "x",
    "value5": 12,
    "value6": 12
}], 
"xAxes": [{
  "type": "CategoryAxis",
  "id": "id-1",
  "title": {
      "type": "Label",
      "id": "span",
      "text": "Span in Metres"
  },
  "dataFields": {
      "category": "category"
  },
  "startLocation": 0.5,
  "endLocation": 0.5,
  "renderer": {
      "grid": {
          "template": {
              "type": "Grid",
              "location": 0.5
          }
      },
      "minGridDistance": 20
  }
}],
"yAxes": [{
  "type": "ValueAxis",
  "id": "id-2",
  "title": {
      "type": "Label",
      "id": "swl",
      "text": "S.W.L/Tonnes @ 30° STV",
      "propertyFields": {}
  },
  "min": "0",
  "max": "10",
  "renderer": {
      "maxLabelPosition": 0.98
  }
}],  "series": [{
    "type": "LineSeries",
    "name": "SL6",
    "xAxis": "id-1",
    "yAxis": "id-2",
    "baseAxis": "id-1",
    "dataFields": {
        "valueY": "value1",
        "categoryX": "category"
    },
    "fillOpacity": 0.5,
    "strokeWidth": 2,
    "sequencedInterpolation": true,
    "sequencedInterpolationDelay": 100,
    "tooltipText":  "SL6\n{valueY} Tonnes @ {categoryX} M"
}, {
    "type": "LineSeries",
    "name": "SL10",
    "xAxis": "id-1",
    "yAxis": "id-2",
    "baseAxis": "id-1",
    "dataFields": {
        "valueY": "value2",
        "categoryX": "category"
    },
      "propertyFields": {
      "fill": "color",
      "stroke": "color"
     },
    "fillOpacity": 0.5,
    "strokeWidth": 2,
    "sequencedInterpolation": true,
    "sequencedInterpolationDelay": 100,
    "tooltipText":  "S10\n{valueY} Tonnes @ {categoryX} M"
}, {
    "type": "LineSeries",
    "name": "SL20",
    "xAxis": "id-1",
    "yAxis": "id-2",
    "baseAxis": "id-1",
    "dataFields": {
        "valueY": "value3",
        "categoryX": "category"
    },
    "fillOpacity": 0.5,
    "strokeWidth": 2,
    "sequencedInterpolation": true,
    "sequencedInterpolationDelay": 100,
    "tooltipText":  "S20\n{valueY} Tonnes @ {categoryX} M"
},  {
    "type": "LineSeries",
    "name": "SL30",
    "xAxis": "id-1",
    "yAxis": "id-2",
    "baseAxis": "id-1",
    "dataFields": {
        "valueY": "value4",
        "categoryX": "category"
    },
    "fillOpacity": 0.5,
    "strokeWidth": 2,
    "sequencedInterpolation": true,
    "sequencedInterpolationDelay": 100,
    "tooltipText":  "S30\n{valueY} Tonnes @ {categoryX} M"
}, {
    "type": "LineSeries",
    "name": "SL50-35",
    "xAxis": "id-1",
    "yAxis": "id-2",
    "baseAxis": "id-1",
    "dataFields": {
        "valueY": "value5",
        "categoryX": "category"
    },
    "fillOpacity": 0.5,
    "strokeWidth": 2,
    "sequencedInterpolation": true,
    "sequencedInterpolationDelay": 100,
    "tooltipText":  "S50-35\n{valueY} Tonnes @ {categoryX} M"
}, {
    "type": "LineSeries",
    "name": "SL50-55",
    "xAxis": "id-1",
    "yAxis": "id-2",
    "baseAxis": "id-1",
    "dataFields": {
        "valueY": "value6",
        "categoryX": "category"
    },
    "fillOpacity": 0.5,
    "strokeWidth": 2,
    "sequencedInterpolation": true,
    "sequencedInterpolationDelay": 100,
    "tooltipText":  "S50-55\n{valueY} Tonnes @ {categoryX} M"
}],
"legend": {
    "type": "Legend",
    "position": "top"
},
"cursor": {
    "type": "XYCursor",
    "tooltipPosition": "fixed"
},
"colors": {
    "type": "ColorSet",
}
}, "#chartdiv1", am4charts.XYChart);

已删除基色，因此可以单独设置所有图表（段）bg颜色

但是在文档中找不到如何使用基于json配置的图表设置实际颜色

我们如何将SL6段颜色设置为黑色来测试它，然后在其他段上用不同的颜色重复

在灯光范围图表中演示

其中SL6段位于底部

工具提示很好，只是想更改图表段的颜色

谢谢