ActionScript 2.0 :: A Value In An Array As A Color?

i have an assignment and i'm trying to execute it in flash.i use laco tween. i have an xml file and it has captions like;

Code:
<student>
<name>arif amele</name>
<rbir>0x170375</rbir>[code]....

then i pushed each of these values into different arrays.these rbir and riki are rgb color codes but i cant use them still.i can write down the "name" captions into an emptyMovieClip using createTextField.but when i try;

Code:
for(i=0;i<ogr.length;i++) {
_root["ad"+i].onRollOver = function(){
_root.kare.colorTo(rbir[i],1);
_root.kare2.colorTo(riki[i],1);
}
}

it doesn't work.