I run a forum with around 7,000 members. On the old threads I changed the style sheet to avoid the often used alternating line colors, but shaded the whole line a different color when it was a new post.
When everything was redone for this version, that kinda got left by the wayside. However, I know that ALOT of people loved this. Since I'm working on the style editor right now I'll try and work this back in.