The only thing I don't like is the status icons. Green for online, blue for away/idle, red for busy? I prefer traffic lights or similar. If we compare to older versions of Messenger, red was the colour for offline, so it's a bit weird having it for busy. When I saw a red status icon on the tabs I thought it meant offline, so I thought it was a bug at first, until I scanned through my contacts list and found it was for busy.
I feel bad for criticizing a skin which has had so much work put into it
. But I guess it won't do any harm
.