How echart modifies the color of the origin of a line chart adds prompts and modifies the text style of the y-axis.

is where my picture is circled

this is my code novice asking the great god for advice

option = {
    tooltip : {
        trigger: "axis",
     
    },
    
    toolbox: {
        show : true,
        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",
            boundaryGap : false,
            data : ["2012","2013","2014","2015","2016","2017","2018"]
        }
    ],
   grid: {
           "backgroundColor":"rgba(10,220,110,.5)",
           height:"200"
        },
     
    yAxis : [
        {
            type : "value"
        }
    ],

axisLabel:{
        textStyle:{
             color:"-sharp333333"//xy1
        }
    },
    axisTick:
    {
        show: false,
    },

    series : [

        {
            name:"",
            type:"line",
            stack: "",
            symbol:"circle",
            symbolSize:"10",
            itemStyle: {normal: {areaStyle: {type: "default"}}},
               color: {
        type: "linear",
        x: 0,
        y: 0,
        x2: 0,
        y2: 1,
        colorStops: [{
        offset: 1, color: "-sharpfefeff" // 0% 
    }, {
        offset: 0.4, color: "-sharpe8efff" // 100% 
    }],
    globalCoord: false //  false
},
              itemStyle: {
                normal: {
                    areaStyle: {
                        // 
                     
                    },
                    lineStyle:{  
                     color:"-sharpf68698"  
                                    }  
                }
            },

            data:[50, 110, 80, 200, 240, 70, 350]
        },
       
    ]
};
Feb.27,2021

axisLabel: {/ / processing unit correlation
formatter:'{value} unit'
},
axisLine: {/ / processing axis color

        lineStyle: {
            color: 'red',
        }
    },

axisLabel: {/ / process axis fonts

        color: '-sharp000',   
    }

in fact, there are many on the Internet.
`/ / set the color of the axis
xAxis: [
{

type : 'category',
data : [],
splitLine: false,
nameTextStyle: {
  color: '' // x
},
axisLine: {
  lineStyle: {
    color: '' //
  }
}

}
]

/ / set the color of the discount and the color of the discount

            series: [{
                data: number,
                type: 'line',
                itemstyle : {
                    normal : {
                        linestyle:{
                            color:'-sharp16e868',
                        },
                        bordercolor:"-sharp16e868"
                    }
                },
            }]
            

/ / set coordinate font color

                    axisLabel: {
                        show: true,
                        textStyle: {
                            color: 'white'
                        }
                    },`
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