Extra Color Classes

<?php
$copy = $data;
$listClasses = ['red', 'green', 'blue'];
while(count($copy[0]))
{
    $rowdata = [];
    foreach($copy as &$value) {
        $rowdata[] = array_shift($value);
    }
    unset($value);
    $headline = array_shift($rowdata);
    $li = '';
    $i = 0;
    foreach($rowdata as $value) {
        $class = isset($listClasses[$i]) ? $listClasses[$i++] : '';
        $li .= "<li class=\"bg-primary text-white $class\">$value</li>\n";
    }

    echo <<<"_HTML"
    <div class="col-lg-4">
        <h3 class="text-primary text-center">$headline</h3>
        <ul class="list-box">
            $li
        </ul>
    </div>
_HTML;
}