text: "use strict";
  // FMG utils related to colors
  
  // convert RGB color string to HEX without #
  function toHEX(rgb) {
    if (rgb.charAt(0) === "#") return rgb;
  
    rgb = rgb.match(/^rgba?[\s+]?\([\s+]?(\d+)[\s+]?,[\s+]?(\d+)[\s+]?,[\s+]?(\d+)[\s+]?/i);
    return rgb && rgb.length === 4
      ? "#" +
          ("0" + parseInt(rgb[1], 10).toString(16)).slice(-2) +
          ("0" + parseInt(rgb[2], 10).toString(16)).slice(-2) +
          ("0" + parseInt(rgb[3], 10).toString(16)).slice(-2)
      : "";
  }
  
  // return array of standard shuffled colors
  function getColors(number) {
    const c12 = ["#dababf", "#fb8072", "#80b1d3", "#fdb462", "#b3de69", "#fccde5", "#c6b9c1", "#bc80bd", "#ccebc5", "#ffed6f", "#8dd3c7", "#eb8de7"];
    const cRB = d3.scaleSequential(d3.interpolateRainbow);
    const colors = d3.shuffle(d3.range(number).map(i => (i < 12 ? c12[i] : d3.color(cRB((i - 12) / (number - 12))).hex())));
    return colors;
  }
  
  function getRandomColor() {
    return d3.color(d3.scaleSequential(d3.interpolateRainbow)(Math.random())).hex();
  }
  
  // mix a color with a random color
  function getMixedColor(color, mix = 0.2, bright = 0.3) {
    const c = color && color[0] === "#" ? color : getRandomColor(); // if provided color is not hex (e.g. harching), generate random one
    return d3.color(d3.interpolate(c, getRandomColor())(mix)).brighter(bright).hex();
  }
  