List Component Text Color RollOver?

Previously in AS2, to set the style for a List Component when the mouse was over an item you would simple set it with
Code:

setStyle("rollOverColor", 0x000000);

I've been trying to find info on how the heck you do this in AS3, cause the above dont work.i've been playing with the following code, but it does not have a rollOver property

Code:

var tf:TextFormat = new TextFormat();
tf.color = 0x00FF00;
tf.font = "Andale Mono";
tf.size = 14;

PS, normally when a programing language is changed, is is done at an easing speed, but AHHH! NO!!! not with AS3, it has changed 101%