Make a background Image disappear from button on button click, TouchableWithoutFeedback - React Native?

I have created an extremely large button with a giraffe head and a blue sky with clouds behind. I am wondering how when you click on the giraffe head you can make the image (sky behind) disappear and then reappear when you click the giraffe again. I need lots of these buttons so I have tried to make a reusable button component.

I made a Stack of the Components. https://snack.expo.io/@tamsynjennifer/custom-button

Otherwise this is the code:

REUSABLE BUTTON.JS

import React from 'react';
import { View, StyleSheet, Image, TouchableWithoutFeedback } from 'react-native';

const Button = ({ backgroundImage, mainImage, onPress }) => (
  <View style={styles.container}>
    <Image
       style={styles.bgImage}
       source={backgroundImage}
       resizeMode={'contain'}
    />
    <TouchableWithoutFeedback 
      onPress={onPress}
      style={styles.button}
    >
     <Image
        style={styles.image}
        source={mainImage}
        resizeMode={'contain'}
     />
    </TouchableWithoutFeedback>
  </View>
);

const styles = StyleSheet.create({
  container: {
    height: 250,
    width: 250,
    justifyContent: 'center',
    alignItems: 'center',
    marginTop: 0,
  },
  button: {
    height: 200,
    width: 200
  },
  bgImage: {
    alignSelf: 'center',
    justifyContent: 'center',
    position: 'absolute',
    height: 250,
    width: 250,
  },
  image: {
   alignSelf: 'center',
    justifyContent: 'center',
    position: 'absolute',
    height: 200,
    width: 200
  },
});

export default Button;

APP.JS

import React, { Component } from 'react';
import { Text, View, StyleSheet } from 'react-native';
import { Constants } from 'expo';

const bgImage = require("./assets/BgImage.png");
const mainImage = require("./assets/MainImage.png");

import Button from './Button';

class App extends Component {
  render() {
    return (
      <View style={styles.container}>
          <View style={styles.button}>
             <Button
                backgroundImage={bgImage}
                mainImage={mainImage}
             />
          </View>

      </View>
     );
   }
}

const styles = StyleSheet.create({
  container: {
    height: 300,
    width: 300,
    justifyContent: 'center',
    alignItems: 'center'
  },
  button: {
    height: 250,
    width: 250,
    alignSelf: 'center',
    position: 'absolute' 
  },
});

export default App;