librenms-librenms/includes/html/graphs/customoid/customoid.inc.php

<?php

$rrd_filename = Rrd::name($device['hostname'], [$type, $subtype]);

require 'includes/html/graphs/common.inc.php';

$scale_min = 0;
$graph_max = 1;
$unit_text = $unit;

$ds = 'oid_value';

$colour_area = '9999cc';
$colour_line = '0000cc';

$colour_area_max = '9999cc';

require 'includes/html/graphs/generic_simplex.inc.php';