Eu estou tentando criar um diálogo com 2 NumberPickers. Eu gostaria que eles fossem o estilo padrão do Holo. Não consigo encontrar bons exemplos. Até agora eu tenho:

    LayoutInflater inflater = (LayoutInflater)
        getApplicationContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
        View npView = inflater.inflate(R.layout.number_picker_dialog, null);
        NumberPicker minPicker = (NumberPicker) npView.findViewById(R.id.min_picker);
        minPicker.setMaxValue(100);
        minPicker.setMinValue(0);
        NumberPicker maxPicker = (NumberPicker) npView.findViewById(R.id.max_picker);
        maxPicker.setMaxValue(100);
        maxPicker.setMinValue(0);

        AlertDialog.Builder builder = new AlertDialog.Builder(this);
        builder.setTitle("Text Size:");
        builder.setView(npView);
        builder.setPositiveButton("Okay",
            new DialogInterface.OnClickListener() {
                public void onClick(DialogInterface dialog, int whichButton) {

                }
            });
       builder.setNegativeButton("Cancel",
                new DialogInterface.OnClickListener() {
                    public void onClick(DialogInterface dialog, int whichButton) {
                    }
                });
       dialog = builder.create();
       dialog.show();

number_picker_dialog xml:

 <?xml version="1.0" encoding="utf-8"?>
 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
 xmlns:holo="http://schemas.android.com/apk/res-auto"
 android:layout_width="match_parent"
 android:layout_height="match_parent"
 android:orientation="horizontal" 
 android:gravity="center">

<NumberPicker 
    android:id="@+id/min_picker"
    android:width="100dip"
    android:layout_height="wrap_content"
    android:layout_width="wrap_content"
    android:/>

<NumberPicker 
    android:id="@+id/max_picker"
    android:width="100dip"
    android:layout_height="wrap_content"
    android:layout_width="wrap_content"/>

</LinearLayout>

Mas o texto do colorpicker é branco (como o fundo), e eu não consigo definir o textColor do NumberPicker.

Como posso definir o textColor ou alguém sabe um bom exemplo de NumberPicker?