效果：
<html>
<head>
<title>JS调用调色板</title>
</head>
<body>
<script type="text/javascript">
function returnColor(va) {
var tempColor = va;
var Hcolor = dlgHelper.ChooseColorDlg(tempColor).toString(16);
with (event.srcElement) {
value = ((Hcolor.length < 6) ? "000000".substring(0, 6 - Hcolor.length) : "") + Hcolor;
}
}
</script>
<object id="dlgHelper" classid="clsid:3050f819-98b5-11cf-bb82-00aa00bdce0b" width="0px" height="0px"></object>
<input type="text" value="" size="12" readonly="readonly"/>
</body>
</html>