The new Facebook Messenger app has improved again, they've added a newer look, more vibrant blue and the layout closer resembles Skype which is no bad thing. It's a mix of strong blue mixed with Holo's UI on a white BG:
^It's also easier to see who's active on what platform as well and it handles SMS which appears to be the direction they're all heading now as Google+ does the same as well as a few other big social apps.
I really like it, the chat heads (bubbles on top of other apps) are really nice nicely animated and smooth and the little sounds are iPhone-like and minimal, non intrusive and pleasing to the ears.

^It's also easier to see who's active on what platform as well and it handles SMS which appears to be the direction they're all heading now as Google+ does the same as well as a few other big social apps.
I really like it, the chat heads (bubbles on top of other apps) are really nice nicely animated and smooth and the little sounds are iPhone-like and minimal, non intrusive and pleasing to the ears.