Support custom css properties?

[seebigs]

<div style="--color: red; color: var(--color)">text</div>
<script>
$('div').css('--color') ; // should return "red"
$('div').css('--color','blue') ; // should change text color to blue

//without jQuery we must currently do it like this:
getComputedStyle($('div')[0]).getPropertyValue('--color') ;
$('div')[0].style.setProperty('--color','blue') ;
</script>