The ability to customize the appearance of chats is helpful for various reasons – not only personalization, but also to help more easily differentiate between conversations at a glance. Now it seems that Meta is working to bring more themes to the Android version of the app. Spread across a number of categories, the themes are varied in style, but there is another interesting thing to note – some of the themes are animated. In all, there are three categories of theme – Featured, Doodle, and Mini