A btw, a good thing would be the timestamp on each line not only the first, because if you receive a message and in two hours get a new message, there's no way to see when the second message were sent.
Maybe keep the same way, and add a timestamp in each line barely visible, a dark gray. Well, you're the stylish dude :)

Great! I'll wait your version :)

Nice theme. Animations too long for me, but cool.

It's great. I love it.
But in IRC you've no way to know who sent the message.

Nice and clean.