How to change text color of a button in xml style file?

Hello guys, I have a button and his xml file, I want to change the text color:

But I don't know how can I do this, have my xml style file, could anyone can please help me to tell me wht's the property where I need to change text color?

`

  <item android:right="5dp" android:top="5dp">
    <shape>
      <corners android:radius="2dp"/>
      <solid android:color="#D6D6D6"/>
    </shape>
  </item>


  <item android:bottom="2dp" android:left="2dp">
    <shape>
      <gradient android:angle="270" android:endColor="#4A6EA9" android:startColor="#4A6EA9"/>
      <stroke   android:width="1dp" android:color="#BABABA"/>
      <corners android:radius="4dp"/>
      <padding android:bottom="10dp" android:left="10dp" android:top="10dp"/>
    </shape>
  </item>
</layer-list>

  <item android:right="5dp" android:top="5dp">
    <shape>
      <corners android:radius="2dp"/>
      <solid android:color="#D6D6D6"/>
    </shape>
  </item>
  <item android:bottom="2dp" android:left="2dp">
    <shape>
      <gradient android:angle="270" android:endColor="#4A6EA9" android:startColor="#4A6EA9"/>
      <stroke   android:width="1dp" android:color="#BABABA"/>
      <corners android:radius="4dp"/>
      <padding android:bottom="10dp" android:left="10dp" android:top="10dp"/>

    </shape>
  </item>
</layer-list>

  <item android:right="5dp" android:top="5dp">
    <shape>
      <corners android:radius="2dp"/>
      <solid android:color="#D6D6D6"/>
    </shape>
  </item>



  <item android:bottom="2dp" android:left="2dp">
    <shape>
      <gradient android:angle="270" android:endColor="#7C97C1" android:startColor="#4A6EA9"/>
      <stroke   android:width="1dp" android:color="#BABABA"/>
      <corners android:radius="4dp"/>
      <padding android:bottom="10dp" android:left="10dp" android:top="10dp"/>



    </shape>

  </item>

</layer-list>

`