十进制的颜色值转换成十六进制

<script type="text/javascript">
function MyColor(name,r,g,b){
this.name=name;
this.red=r;
this.green=g;
this.blue=b;
}
MyColor.prototype.hexValue=function(){
var hR=this.red.toString(16);
var hG=this.green.toString(16);
var hB=this.blue.toString(16);
return "#"+(this.red<16?("0"+hR):hR)+(this.green<16?("0"+hG):hG)+(this.blue<16?("0"+hB):hB);
};
var CnLeiColor=new MyColor("red",255,0,0);
alert(CnLeiColor.hexValue());
</script>