bitwise for color

bitwise for color.js

var hexToRgb = function(hex) {
  hex = parseInt(hex, 16);
  return [
    (hex & 0xff0000) >> 16,
    (hex & 0x00ff00) >> 8,
    (hex & 0x0000ff)
  ];
};

var rgbToHex = function(r, g, b) {
  return (1 << 24 | r << 16 | g << 8 | b).toString(16).substr(1);
};