How to find all text layers with specific color and replace this color with an other one?

Question

Recently, I added a similar question about how to find all shapes with specific color and replace this color with an other one. Sergey Kritskiy gave me the solution with a working example which I changed slightly, according to my needs. The problem is, that if I try to change the color of a text layer, using the same script, it stops at var adj = desc.getList(stringIDToTypeID("adjustment")).getObjectValue(0); and I get this message The requested property does not exist.. So I need your help to find the right way to do the same thing for one or more text layers.

function getLayersData()
{
    var lyrs = [];
    var layers = 1;
    while (true)
    {
        ref = new ActionReference();
        ref.putIndex(charIDToTypeID('Lyr '), layers);

        try 
        {
            var desc = executeActionGet(ref);
        } 
        catch (err)
        {
            break;                
        }

        var lyr = {};
        lyr.type = desc.getInteger(stringIDToTypeID("layerKind"));
        lyr.name = desc.getString(charIDToTypeID("Nm  "));
        lyr.id = desc.getInteger(stringIDToTypeID("layerID"));

        if (lyr.type == layerType && lyr.name.match(layerName))
        {
            var adj = desc.getList(stringIDToTypeID("adjustment")).getObjectValue(0);

            if (adj.hasKey(stringIDToTypeID("color"))) 
            {
                var curColor = new SolidColor();
                curColor.rgb.red = adj.getObjectValue(stringIDToTypeID("color")).getUnitDoubleValue(stringIDToTypeID("red"));
                curColor.rgb.green = adj.getObjectValue(stringIDToTypeID("color")).getUnitDoubleValue(stringIDToTypeID("grain"));
                curColor.rgb.blue = adj.getObjectValue(stringIDToTypeID("color")).getUnitDoubleValue(stringIDToTypeID("blue"));
                lyr.color = curColor; 

                if (lyr.color.rgb.hexValue == currentColor[0])
                {
                    lyrs.push(lyr);                                        
                }                      
            }                
        }
        layers++;            
    }
    return lyrs        
};