Magento – Magento 2: Set default attribute option as None

I recently ran into this issue and have been wondering the same thing. I've been playing with a possible workaround I thought I'd share.

I'm in CE version 2.0.7 and have found it possible to set no value on drop down attributes via the product grid mass action feature. While using 'Update attributes' you can check the box to Change the attribute but leave the drop down blank. After Save the selected product(s) do not have a value set for the changed drop down attribute.

Not satisfying or easy but possible.

Finally solved my self.

<script type="text/javascript">
    require(['jquery'],function($){
        $(document).ready(function() {
            $("#color_drop_down_options > [value='<?php echo $FirstIndex ?>']").attr("selected", "true");
        });
    });
</script>