지도의 형상 모양에 대해 임의의 색상을 생성하려면 어떻게 해야 합니까?

function getRandomColor() {
  // Initialize empty string to store color code
  var color = '#';

  // Loop through 6 characters (hex color code)
  for (var i = 0; i < 6; i++) {
    // Generate a random number between 0 and 15
    var randomNum = Math.floor(Math.random() * 16);

    // Convert number to hex character and append to color string
    color += randomNum.toString(16);
  }

  // Return the generated hex color code
  return color;
}

document.overlay = GPolyline.fromEncoded({
    color: getRandomColor(),
    weight: 10,
    points: encoded_points,
    zoomFactor: 32,
    levels: encoded_levels,
    numLevels: 4
});