'Only an admin can add a calendar.']);
exit;
}
$colors = ['#3c8dbc', '#0f9d8a', '#7c3aed', '#d97706', '#dc2626', '#db2777', '#15803d', '#475569'];
$used = array_map('strtolower', array_column(calendarList(), 'calendar_color'));
$suggested = current(array_diff($colors, $used)) ?: $colors[0];
ob_start();
?>