Targeting duplicates

I am duplicating a movieclip on the stage in which Flash labels them in order.
AKA. ball1…ball2…ball3…ball4…etc.

I’m trying to change the color of all of them from another button and so far I have to do it like this: Is there a shorter way?

on (release) {
var visitedcolor = new Color(_root.bb.t1.screen);
visitedcolor.setRGB(0x00FF00);
var visitedcolor1 = new Color(_root.bb.ball1.screen);
visitedcolor1.setRGB(0x00FF00);
var visitedcolor2 = new Color(_root.bb.ball2.screen);
visitedcolor2.setRGB(0x00FF00);
var visitedcolor3 = new Color(_root.bb.ball3.screen);
visitedcolor3.setRGB(0x00FF00);
var visitedcolor4 = new Color(_root.bb.ball4.screen);
visitedcolor4.setRGB(0x00FF00);
var visitedcolor5 = new Color(_root.bb.ball5.screen);
visitedcolor5.setRGB(0x00FF00);
}

try
on (release) {
for (i=1; i<6; i++) {
visitedcolor = new Color(_root.bb[“ball”+i].screen);
visitedcolor.setRGB(0x00FF00);
}
}

that’ll work. Thanks