planetoftheweb

$lightgray      : #819090;
$gray           : #708284;
$mediumgray     : #536870;
$darkgray       : #475B62;
$darkblue       : #0A2933;
$darkerblue     : #042029;
$paleryellow    : #FCF4DC;
$paleyellow     : #EAE3CB;
$yellow         : #A57706;
$orange         : #BD3613;

renancouto

var LightenColor = function(color, percent) {
  	var num = parseInt(color,16),
		amt = Math.round(2.55 * percent),
		R = (num >> 16) + amt,
		B = (num >> 8 & 0x00FF) + amt,
		G = (num & 0x0000FF) + amt;

		return (0x1000000 + (R<255?R<1?0:R:255)*0x10000 + (B<255?B<1?0:B:255)*0x100 + (G<255?G<1?0:G:255)).toString(16).slice(1);
};