If you follow the livescores, at half time you'll see a purple message.
The purple name game is open at half time See here ...
http://www.fanfooty.com.au/game/matchscores.html?id=3389 If you follow that link, you get a chance to guess a players full time DT score. If you get it right, your name in the live chat will be purple for a week.
You do need a livechat acount - apply at the top of that page.