Atk table color by dependent value

test.php

<?php


require '../vendor/autoload.php';

use atk4\ui\App;

$app = new App();
$app->initLayout('Centered');

$test_data = [
    ['name'=>'record1','value'=>'100','datum_field'=>new DateTime('2019-09-29')],
    ['name'=>'record2','value'=>'200','datum_field'=>new DateTime('2019-09-28')],
    ['name'=>'record3','value'=>'300','datum_field'=>new DateTime('2019-09-30')],
    ['name'=>'record4','value'=>'400','datum_field'=>new DateTime('2019-10-01')],
];

$table = $app->add('Table');
$table->setSource($test_data);
$table->addHook('beforeRow',function($table){
    if ($table->current_row['value']==100){
        $table->t_row->template[0] = "\n  <tr class=\"red\" data-id=\"";

    }elseif ($table->current_row['value']==200){
        $table->t_row->template[0] =  "\n  <tr class=\"green\" data-id=\"";
    }else{
        $table->t_row->template[0] = "\n  <tr data-id=\"";
    }
});