var ColorScale = function (colors, normalizeFunction, minValue, maxValue) {
  if (colors) {
    this.setColors(colors);
  }
  if (normalizeFunction) {
    this.setNormalizeFunction(normalizeFunction);
  }
  if (minValue) {
    this.setMin(minValue);
  }
  if (minValue) {
    this.setMax(maxValue);
  }
};

ColorScale.prototype = {
  colors: []
};