Style the color of the placeholder or first option in a select dropdown.

custom.js

<script>
 $(function($) {
      /*function for placeholder select*/
      function selectPlaceholder(selectID){
        var selected = $(selectID + ' option:selected');
        var val = selected.val();
        $(selectID + ' option' ).css('color', '#2c2c2c');
        selected.css('color', '#AEC3ED');
        if (val == "") {
          $(selectID).css('color', '#AEC3ED');
        };
        $(selectID).change(function(){
          var val = $(selectID + ' option:selected' ).val();
          if (val == "") {
            $(selectID).css('color', '#AEC3ED');
          }else{
            $(selectID).css('color', '#2c2c2c');
          };
        });
      };

      selectPlaceholder('select');

    });

</script>