Where can I change the title color of the echarts bar chart?

where is the title color of the 1.echarts bar chart modified?
clipboard.png
js

        let option = {
          color: ["-sharp003366", "-sharp006699", "-sharp4cabce", "-sharpe5323e"],
          title: {
            show: true,
            textStyle: {
              fontWeight: "normal",
              color: "-sharpfff", 
              fontSize: 14
            },
            left: "center"
          },
          tooltip: {
            trigger: "axis",
            // 
            show: true,
            axisPointer: {
              type: "shadow"
            }
          },
          legend: {
            data: ["Forest", "Steppe", "Desert", "Wetland"]
          },
          toolbox: {
            show: true,
            orient: "vertical",
            left: "right",
            top: "center",
            feature: {
              mark: {
                show: true
              },
              dataView: {
                show: true,
                readOnly: false
              },
              magicType: {
                show: true,
                type: ["line", "bar", "stack", "tiled"]
              },
              restore: {
                show: true
              },
              saveAsImage: {
                show: true
              }
            }
          },
          calculable: true,
          xAxis: [{
            type: "category",
            axisLabel: {
              show: true,
              textStyle: {
                color: "-sharpfff"
              },
            },
            axisLine: {
              lineStyle: {
                color: "-sharpfff"
              }
            },
            axisTick: {
              show: false
            },
            data: ["2012", "2013", "2014", "2015", "2016"]
          }],
          yAxis: [{
            type: "value",
            axisLine: {
              lineStyle: {
                color: "-sharpfff"
              }
            },
            splitLine: {
              lineStyle: {
                color: ["-sharpfff"]
              }
            },
          }],
          series: [{
              name: "Forest",
              type: "bar",
              barGap: 0,
              label: labelOption,
              data: [320, 332, 301, 334, 390]
            },
            {
              name: "Steppe",
              type: "bar",
              label: labelOption,
              data: [220, 182, 191, 234, 290]
            },
            {
              name: "Desert",
              type: "bar",
              label: labelOption,
              data: [150, 232, 201, 154, 190]
            },
            {
              name: "Wetland",
              type: "bar",
              label: labelOption,
              data: [98, 77, 101, 99, 40]
            }
          ]
        };
Mar.09,2021

modify the style of the title in textStyle of the legend option:

legend: {
    data: ['Forest', 'Steppe', 'Desert', 'Wetland'],
    textStyle: {
        color: 'red'
    }
}
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