Salut!
Voici le code qui te permet de faire cela:
<html>
<!-- Author: HackTrack -->
<head>
<title>Démo de sélection de couleur de fond</title>
<script language="javascript" type="text/javascript">
function changeBackgroundColor(elm){
window.status=elm.style.backgroundColor;
document.body.style.backgroundColor=elm.style.backgroundColor;
}
</script>
<style>
table, tr, td{
margin: 0px;
padding:0px;
border: solid 1px #0f0f0f;
}
div{
width: 50px;
height: 50px;
}
</style>
</head>
<body>
<table>
<tr>
<th colspan="4">Choisissez la couleur de fond</th>
</tr>
<tr>
<td><div onclick="javascript: changeBackgroundColor(this);" style="background-color: #000000;"></div></td>
<td><div onclick="javascript: changeBackgroundColor(this);" style="background-color: #111111;"></div></td>
<td><div onclick="javascript: changeBackgroundColor(this);" style="background-color: #222222;"></div></td>
<td><div onclick="javascript: changeBackgroundColor(this);" style="background-color: #333333;"></div></td>
</tr>
<tr>
<td><div onclick="javascript: changeBackgroundColor(this);" style="background-color: #444444;"></div></td>
<td><div onclick="javascript: changeBackgroundColor(this);" style="background-color: #555555;"></div></td>
<td><div onclick="javascript: changeBackgroundColor(this);" style="background-color: #666666;"></div></td>
<td><div onclick="javascript: changeBackgroundColor(this);" style="background-color: #777777;"></div></td>
</tr>
<tr>
<td><div onclick="javascript: changeBackgroundColor(this);" style="background-color: #888888;"></div></td>
<td><div onclick="javascript: changeBackgroundColor(this);" style="background-color: #999999;"></div></td>
<td><div onclick="javascript: changeBackgroundColor(this);" style="background-color: #aaaaaa;"></div></td>
<td><div onclick="javascript: changeBackgroundColor(this);" style="background-color: #bbbbbb;"></div></td>
</tr>
<tr>
<td><div onclick="javascript: changeBackgroundColor(this);" style="background-color: #cccccc;"></div></td>
<td><div onclick="javascript: changeBackgroundColor(this);" style="background-color: #dddddd;"></div></td>
<td><div onclick="javascript: changeBackgroundColor(this);" style="background-color: #eeeeee;"></div></td>
<td><div onclick="javascript: changeBackgroundColor(this);" style="background-color: #ffffff;"></div></td>
</tr>
</table>
</body>
</html>
;-)
HackTrack