Flamingo is the latest Android Twitter client that offers a highly customizable interface, a Material Design and much more. The app is now available on Google Play for 99 cents, which is a great price for the features that are being offered. The developer, Sam Runston, is also known for the great weather app, Weather Timeline.
From the app's description:
Flamingo is a bright and colourful Twitter client, which a simple and greatly customisable interface. It provides you with the Twitter experience you know and love with beautiful material design. You can easily switch between several accounts, and individually theme those accounts. GIFs can be played inline in the timeline and you can easily add them to your tweets (powered by Giphy). Hover preview allows you to quickly preview photos, gifs and user profiles by simply long pressing on an icon or image.
You can grab the Flamingo for Twitter beta from the Google Store now. Keep in mind that it is in beta still, so it may be a bit light on features or some things may act a little wonky. Be sure to give the developer feedback and let us know what you think of the app once you get it set up.