I'm working with Yii 2, and it's gridviewgrid view to show information.
Now, my problem is that whenever a user scans two identical serial numbers and/or mac addresses, it should highlight the row (change color to red), and show some error sign or whatever.
Screenshot: 
What I want it to look like:

I'm new to Yii2 and don't exactly know how they do it with the gridviewgrid view. I've been researching on this specific problem but couldn't find anything.
Code for Gridview (Nothing special)
<?= GridView::widget([ 'id' => 'scan-batch-grid', 'dataProvider' => $dataProvider, 'columns' => [ ['class' => 'yii\grid\SerialColumn'], ['class' => 'yii\grid\CheckboxColumn'], [ 'attribute' => 'product_ID', 'value' => 'product.name' ], 'SN', 'MAC', [ 'class' => 'yii\grid\ActionColumn', 'urlCreator' => function ($action, $model, $key, $index) { return Url::to(['scan-batch/view', 'id' => $key, 'scan' => $model->scan_batch_ID]); }, 'buttons' => [ 'update' => function ($url, $model, $key) { return ''; }, 'delete' => function ($url, $model, $key) { return ''; }, ], ], ], ]); ?> Could anyone help me? A link or even a slightly relevant Q/A would be appreciated!
EDIT
I only want to know how to change the color of only one row, I can do the checks myself! :).