Subtitles!!

I always have trouble hearing what my champion is saying. Unless I want to turn down all the sounds except for the voices, I can't hear/understand them. I think having subtitles that you can turn on/off would be so useful. They could appear in the chatbox so that if you choose to have the subtitles on, they're not distracting you from the game. They could show up as a different color from regular chat so that the messages don't get mixed up. Anyone else think this would be such a useful thing???