Check which Layer in this group is visible and store it's name as variable

So, i have found a script that does select all visible layers in a document. Now i'd need to edit it to select the visible layer inside the layerset named "Colors"

How could i "limit" the script to just check the "Colors" layerset for visible layers (will be just one at a time, i.e. "Yellow")?

#target photoshop
app.bringToFront();
main();
function main(){
if(!documents.length) return;
var Vis = getVisLayers();
deselectLayers();
for(var a in Vis){
    selectLayerById(Number(Vis),true);
    }
}
function getVisLayers(){ 
   var ref = new ActionReference(); 
   ref.putEnumerated( charIDToTypeID('Dcmn'), charIDToTypeID('Ordn'), charIDToTypeID('Trgt') ); 
   var count = executeActionGet(ref).getInteger(charIDToTypeID('NmbL')) +1; 
   var Names=[];
try{
    activeDocument.backgroundLayer;
var i = 0; }catch(e){ var i = 1; };
   for(i;i<count;i++){ 
       if(i == 0) continue;
        ref = new ActionReference(); 
        ref.putIndex( charIDToTypeID( 'Lyr ' ), i );
        var desc = executeActionGet(ref);
        var layerName = desc.getString(charIDToTypeID( 'Nm  ' ));
        var Id = desc.getInteger(stringIDToTypeID( 'layerID' ));
        if(layerName.match(/^<\/Layer group/) ) continue;
        var layerType = typeIDToStringID(desc.getEnumerationValue( stringIDToTypeID( 'layerSection' )));
        var isLayerSet =( layerType == 'layerSectionContent') ? false:true;
        var vis = desc.getBoolean(charIDToTypeID( "Vsbl" ));
        if(!isLayerSet && vis) Names.push(Id);
   }; 
return Names;
};
function selectLayerById(ID, add) {
    add = (add == undefined)  ? add = false : add;
   var ref = new ActionReference();
   ref.putIdentifier(charIDToTypeID('Lyr '), ID);
   var desc = new ActionDescriptor();
   desc.putReference(charIDToTypeID('null'), ref);
   if (add) {
      desc.putEnumerated(stringIDToTypeID('selectionModifier'), stringIDToTypeID('selectionModifierType'), stringIDToTypeID('addToSelection'));
   }
   desc.putBoolean(charIDToTypeID('MkVs'), false);
   executeAction(charIDToTypeID('slct'), desc, DialogModes.NO);
}
function deselectLayers() { 
    var desc01 = new ActionDescriptor(); 
        var ref01 = new ActionReference(); 
        ref01.putEnumerated( charIDToTypeID('Lyr '), charIDToTypeID('Ordn'), charIDToTypeID('Trgt') ); 
    desc01.putReference( charIDToTypeID('null'), ref01 ); 
    executeAction( stringIDToTypeID('selectNoLayers'), desc01, DialogModes.NO ); 
};

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You need to use a recursive function to search each group and subgroup. The if statement detects if the layer is a layerset and if so restarts the function to search for layers in that group.

var doc = app.activeDocument 
    var layersToTargetNameArray = ["Background", "Artwork", "diecut", "size", "sign of panel"]; 
findLayers (doc)
function findLayers(gp){
   for (var i = 0, i< gp.layers.length; i++) { 
        var curLayer = gp.layers; 
        if(curLayer.typename == 'LayerSet'){findLayers (curLayer)}
        else{
            for (var j = 0, jl = layersToTargetNameArray.length; j < jl; j++) { 
                if (curLayer.name == layersToTargetNameArray) { 
                    // -------------------------------------------- 
                    // do something if layer name found 
                    // -------------------------------------------- 
                    curLayer.visible = false; // basic example 
                } else { 
                    // -------------------------------------------- 
                    // do something else if layer name not found 
                    // -------------------------------------------- 
                } 
            } 
        }  
    }
}