<script>

$(document).ready(function()
{
    $("#color-submit").click(function()
    {
        $.ajax(
    {
        async:false,
        type:"POST",
        url:"<?php echo plugins_url('/query/colorsubmit.php',__FILE__);?>",
        data:$("#color-form").serialize(),
        dataType:'json',
        success:function(response)
        {
            alert(response.msg);//var object = JSON.parse(response);
            $(".jumbotron").css({"background-color":"#FF8745"});
            //alert(response['msg']);
            var obj=response.msg;
            console.log(obj);
            }
        }
    );
        });

    });
</script>

<?php
$return = array();
//include_once("../../../../wp-config.php");
global $wpdb;
$color_value=$_POST['color-field'];
if($wpdb->query("UPDATE color_form SET color='$color_value'"))
{
    $msg="Form Updated";
    }else
    {
        $msg="not form Updated";
        }

//$fetch_color=$wpdb->get_results("select color from color_form",ARRAY_A);

    //$return=$fetch_color;

$return['msg']="sdgsdgsd";
echo json_encode($return);
// wp_send_json_success($return);
//wp_send_json($return);
//$wpdb->flush();
?>