Return The Colors Used In A Group

(http://en.wikipedia.org/wiki/Recursion_(computer_science)

This link is broken

I'd use the following approach to get the list of colors used in a group (even if it includes nested groups):

var myDoc = app.activeDocument;
var myGroup = myDoc.groups[0];
var myPageItems = myGroup.allPageItems;
    var myColors =[];
   
for (i = 0; i < myPageItems.length; i++) {
    var myPageItem = myPageItems;
    try {
        if  (!IsInArray(myPageItem.fillColor.name, myColors)) {
            myColors.push(myPageItem.fillColor.name);
        }
        if  (!IsInArray(myPageItem.strokeColor.name, myColors)) {
            myColors.push(myPageItem.strokeColor.name);
        }
    }
    catch (myError) {    }
}

if (myColors.length != 0) {
    alert("List of the colors used in the group:\n" + myColors.join(",").replace(/,/g, "\n"));
}

function IsInArray(myString, myArray) {
    for (x in myArray) {
        if (myString == myArray) {
            return true;
        }
    }
    return false;
}