JS Christmas Light Bulb Random Color Gen SRC

<script>
var possible = "FABCGDEGHIJKLMNOP0QRSTUVWXYZ";
var text="";
var text2="";
var text3="";
for(var i=0; i<26; i++){
text=possible.charAt(Math.floor(Math.random()*possible.length))
text2=possible.charAt(Math.floor(Math.random()*possible.length))
text3=possible.charAt(Math.floor(Math.random()*possible.length))
document.writeln('<body bgcolor='+text+text2+text3+'/>');
}
</script>