javascript获取随机rgb颜色和十六进制颜色的方法

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<script type="text/javascript">
		var consoleDom = document.getElementById("console");
		
		consoleDom.style.color = randomColor1();
		
		//获取rgb类型的颜色  IE7不支持
		function randomColor(){
			var r = Math.floor(Math.random()*256);
			var g = Math.floor(Math.random()*256);
			var b = Math.floor(Math.random()*256);
			return "rgb("+r+","+g+","+b+")";
		}
		
		//获取十六进制颜色
		function randomColor1(){
			var r = Math.floor(Math.random()*256);
			var g = Math.floor(Math.random()*256);
			var b = Math.floor(Math.random()*256);
			
			if(r < 16){
				r = "0"+r.toString(16);
			}else{
				r = r.toString(16);
			}
			if(g < 16){
				g = "0"+g.toString(16);
			}else{
				g = g.toString(16);
			}
			if(b < 16){
				b = "0"+b.toString(16);
			}else{
				b = b.toString(16);
			}
			
			return "#"+r+g+b;
		}
		
		/*
			进制转换
			Number.toString(2);
			转换成281016
			
		*/
		
		function test(){
			//console.log(new Number(15).toString(16));
		}
		//test();
		
	</script>