(Sorry for bad photoshop skills and questionable image quality, lol)
Well, lemme explain. Sometimes, lots of users send messages so fast that the player (you) can't read all the messages quietly, mostly because of bad connection or because of flood.
What I'm suggesting, should you ask? In the image, you can see the cursor pointing to an user's name, and magically, the other usernames get darker, letting the one you pointed with your cursor "highlighted", letting you free to read that user's messages in a more easy manner. Obviously, the image doesn't show it that well, because... huh, it's a mock-up of how can it be, it's not perfect.
So, what do you think?
also, i like seafood's idea.