Just for reference for whomever is doing this, I don't see any striping in the CB with Safari (Version 2.0.1 (412.5), OS X 10.4.2 w/current patches.

And since I don't see it I have no comment on the striping :)

Update: Just to add more information for someone trying to track down what's wrong: I do use the green theme and have a minimal personal CSS set (basically changes the header fonts to Baskerville and that's about it).