itemStyle: {
color: new echarts.graphic.LinearGradient(
0, 0, 0, 1,
[
{ offset: 0, color: "#ffd077" },
{ offset: 0.3, color: "#fcbe49" },
{ offset: 0.6, color: "#c3bf1d" },
{ offset: 1, color: "#777a2a" }
]
)
}
原文：https://www.cnblogs.com/sxdjy/p/14109046.html