title: Create "Raised" or Shadow effect on TouchableOpacity: React Native
body: <p>I use <code>react-native-elements</code>, and they make it easy to make an actual button appear "raised", or shadowed. I want to duplicate this look for <code>TouchableOpacity</code>.</p>
  
  <p>Here's an example of the "raised buttons" with <code>react-native-elements</code>.
  <a href="https://i.stack.imgur.com/Mxuta.png" rel="noreferrer"><img src="https://i.stack.imgur.com/Mxuta.png" alt="Raised button example"></a></p>
  
  <p>It is subtle, but noticeably makes a nice impact.
  How would you go about mimicking this effect with <code>TouchableOpacity</code>?</p>
  
  <p>And yes, I've gone through the docs. If I missed anything, please point it out... but I don't think anything is there to accomplish this. Thanks.</p>