code: function rgbToHex(r, g, b) {
    var integer = ((Math.round(r) & 0xFF) << 16)
      + ((Math.round(g) & 0xFF) << 8)
      + (Math.round(b) & 0xFF);
  
    var string = integer.toString(16).toUpperCase();
    return '#' + ('000000'.substring(string.length) + string);
  }
docs: Convert a color from RGB to hexidecimal
  
  @param {number} r - A value from 0 - 255
  @param {number} g - A value from 0 - 255
  @param {number} b - A value from 0 - 255
  @returns {string} In the format #000000