This is a simple stand-alone JavaScript module to make CSS colors lighter or darker.
Based on http://stackoverflow.com/questions/1507931/generate-lighter-darker-color-in-css-using-javascript/1507987#1507987
by eyelidlessness ( http://stackoverflow.com/users/17964/eyelidlessness )
<script src="https://raw.github.com/eirikb/changecolor/master/changecolor.min.js"></script>
<script>
var someColor = '#AAABBB';
var lighterColor = changecolor.lighter(someColor, 0.5);
var darkerColor = changecolor.darker(someColor, 0.5);
</script>