Svp aide en PHP

<p>
<form action="index.php" method="post">
<input type="checkbox" name="couleur" value="bleu" />BLEU<br />
<input type="checkbox" name="couleur" value="rouge" />ROUGE<br />
<input type="submit" value="OK" />
</form>
</p>

<?php

if(isset($_POST['couleur']))
{

$hote_bd="localhost";
$login_bd="root";
$password_bd="";
$base_bd="mabase";

mysql_connect($hote_bd,$login_bd,$password_bd); 
mysql_select_db($base_bd);

$couleur = $_POST['couleur'];

$req = "insert into table_couleur(Cle, Couleur) values('','".$couleur."')";
$res = mysql_query($req) or die(mysql_error());

}
?>