docs: function (hex, alpha) {
  		var hex = (hex.charAt(0) === '#') ? hex.substr(1) : hex,
  			c = [], result;
  
  		c[0] = parseInt(hex.substr(0, 2), 16);
  		c[1] = parseInt(hex.substr(2, 2), 16);
  		c[2] = parseInt(hex.substr(4, 2), 16);
  
  		result = alpha === undefined ? 'rgb(' + c.join(',') + ')' : 'rgba(' + c.join(',') + ',' + alpha + ')';
  
  		return result;
  	}