if you view the .css, the classes are there:

  • (alt|new)-newintopic
  • (alt|new)-topicicon
  • (alt|new)-topicsubject
  • (alt|new)-topicreplies
  • (alt|new)-topicviews
  • (alt|new)-topictime


they may not be integrated in the style editor yet, but then again it's just a guess.