src/chart/sunburst/SunburstPiece.js
function getNodeColor(node, seriesModel, ecModel) {
    // Color from visualMap
    var visualColor = node.getVisual('color');
    var visualMetaList = node.getVisual('visualMeta');
    if (!visualMetaList || visualMetaList.length === 0) {
        // Use first-generation color if has no visualMap
        visualColor = null;
    }

    // Self color or level color
    var color = node.getModel('itemStyle').get('color');
    if (color) {
        return color;
    }
    else if (visualColor) {
        // Color mapping
        return visualColor;
    }
    else if (node.depth === 0) {
        // Virtual root node
        return ecModel.option.color[0];
    }
    else {
        // First-generation color
        var length = ecModel.option.color.length;
        color = ecModel.option.color[getRootId(node) % length];
    }
    return color;
}
function getNodeColor(node, seriesModel, ecModel) {
    // Color from visualMap
    var visualColor = node.getVisual('color');
    var visualMetaList = node.getVisual('visualMeta');
    if (!visualMetaList || visualMetaList.length === 0) {
        // Use first-generation color if has no visualMap
        visualColor = null;
    }

    // Self color or level color
    var color = node.getModel('itemStyle').get('color');
    if (color) {
        return color;
    }
    else if (visualColor) {
        // Color mapping
        return visualColor;
    }
    else if (node.depth === 0) {
        // Virtual root node
        return ecModel.option.color[0];
    }
    else {
        // First-generation color
        var length = ecModel.option.color.length;
        color = ecModel.option.color[getRootId(node) % length];
    }
    return color;
}
function getNodeColor ( node , seriesModel , ecModel ) { // Color from visualMap var visualColor = node . getVisual ( 'color' ) ; var visualMetaList = node . getVisual ( 'visualMeta' ) ; if ( ! visualMetaList || visualMetaList . length === 0 ) { // Use first-generation color if has no visualMap visualColor = null ; } // Self color or level color var color = node . getModel ( 'itemStyle' ) . get ( 'color' ) ; if ( color ) { return color ; } else if ( visualColor ) { // Color mapping return visualColor ; } else if ( node . depth === 0 ) { // Virtual root node return ecModel . option . color [ 0 ] ; } else { // First-generation color var length = ecModel . option . color . length ; color = ecModel . option . color [ getRootId ( node ) % length ] ; } return color ; }
Get node color

@param {TreeNode} node the node to get color
@param {module:echarts/model/Series} seriesModel series
@param {module:echarts/model/Global} ecModel echarts defaults
Get node color