librenms-librenms/html/includes/print-device-graph.php

<?php
if (empty($graph_array['type'])) {
    $graph_array['type'] = $graph_type;
}
if (empty($graph_array['device'])) {
    $graph_array['device'] = $device['device_id'];
}
// FIXME not css alternating yet
if (!is_integer($g_i / 2)) {
    $row_colour = $list_colour_a;
}
else {
    $row_colour = $list_colour_b;
}
echo '<div class="panel panel-default">
    <div class="panel-heading">
        <h3 class="panel-title">'.$graph_title.'</h3>
    </div>
    <div class="panel-body">
';

require 'includes/print-graphrow.inc.php';

echo '</div>';
echo '</div>';
$g_i++;