Random color for each child element

I'm trying to write a function which will set a random text color to any element with 'randomcolor' class. So I have this

$('.randomcolor').each( function() {
    $(this).css('color', randomColor());
}

..but it doesn't seem to work, even though it doesn't make any errors.

randomColor() function works pretty well, I've already tested it.

So what's the problem with my code?