the effect now is that each area of the map is mapped, so the color of each piece is uncertain (determined by the value of that area)
visualMap: {
        type:"piecewise",
        pieces: [
            {gt: 85, label: "85%",color: "-sharpf54579"},
            {gt: 60, lte: 85, label: "60%-85%",color: "-sharp614bd2"},
            {gt: 0, lte: 60, label: "60%",color: "-sharp0789b8"},
        ]
    },however, the requirement now is that I just want to change the color of the border without changing the color of the area, but it actually shows that if the color is not set, there will be a default color (such as khaki in the following image)
emphasis: {
    itemStyle: {
        //areaColor :"-sharp0073e6",
        borderColor: "-sharpfff",
        borderWidth: 4,
    },
    label: {
        show: true,
        fontSize:22,
        //fontWeight:"bold",
        color:"-sharpfff"
    },
}  
] 
is there a way not to change the color while the mouse is over (even better if there is a zoom in)?
