Changer la couleur du texte dans ce script ?

Bonjour, je rame depuis 1 heure pour trouver le moyen de changer la couleur du texte animé

Merci à toute et à tous


<h2 id="fly" align="center"> Bienvenue sur notre site perso!</h2>

<script type="text/javascript">

//Flying Letters script- by Matthias (info@freejavascripts.f2s.com)
// Modified by Twey for efficiency and compatibility
//For this script and more, visit Dynamic Drive: http://www.dynamicdrive.com

//Configure message to display. Use "$" for linebreak
//By default, set to just grab the text from element with ID="fly"</font>
message = document.getElementById("fly").innerHTML; // $ = taking a new line
distance = 50; // pixel(s)
speed = 200; // milliseconds

var txt="",
num=0,
num4=0,
flyofle="",
flyofwi="",
flyofto="",
fly=document.getElementById("fly");


function stfly() {
for(i=0;i != message.length;i++) {
if(message.charAt(i) != "$")
txt += "<span style='position:relative;visibility:hidden;' id='n"+i+"'>"+message.charAt(i)+"<\/span>";
else
txt += "<br>";
}
fly.innerHTML = txt;
txt = "";
flyofle = fly.offsetLeft;
flyofwi = fly.offsetWidth;
flyofto = fly.offsetTop;
fly2b();
}

function fly2b() {
if(num4 != message.length) {
if(message.charAt(num4) != "$") {
var then = document.getElementById("n" + num4);
then.style.left = flyofle - then.offsetLeft + flyofwi / 2;
then.style.top = flyofto - then.offsetTop + distance;
fly3(then.id, parseInt(then.style.left), parseInt(then.style.left) / 5, parseInt(then.style.top), parseInt(then.style.top) / 5);
}
num4++;
setTimeout("fly2b()", speed);
}
}

function fly3(target,lef2,num2,top2,num3) {
if((Math.floor(top2) != 0 && Math.floor(top2) != -1) || (Math.floor(lef2) != 0 && Math.floor(lef2) != -1)) {
if(lef2 >= 0)
lef2 -= num2;
else
lef2 += num2 * -1;
if(Math.floor(lef2) != -1) {
document.getElementById(target).style.visibility = "visible";
document.getElementById(target).style.left = Math.floor(lef2);
} else {
document.getElementById(target).style.visibility = "visible";
document.getElementById(target).style.left = Math.floor(lef2 + 1);
}
if(lef2 >= 0)
top2 -= num3
else
top2 += num3 * -1;
if(Math.floor(top2) != -1)
document.getElementById(target).style.top = Math.floor(top2);
else
document.getElementById(target).style.top = Math.floor(top2 + 1);
setTimeout("fly3('"+target+"',"+lef2+","+num2+","+top2+","+num3+")",50)
}
}

stfly()

</script>