Array multidimensional

<?php

$cores = array (
    'vermelhas' => array ('maçã','morango','cereja','acerola'),
    'verdes' => array ('banana','melão'),
    'amarelas' => array ('abacate','kiwi','pera')
);

?>

<?php foreach( $cores as $cor => $frutas ): ?>
    <p>
        <p><?php echo $cor; ?></p>
        <ul>
            <?php foreach( $frutas as $fruta ): ?>
                <li><?php echo $fruta; ?></li>
            <?php endforeach ?>
        </ul>
    </p>
<?php endforeach ?>