I've read the discussion about the X11 mouse theme in the chatroom. To be honest: Why do you want to use a white cursor theme? X11 uses black cursors by default since ages and I think we should go for it.
My suggestion is http://gnome-look.org/content/show.php/ ... tent=73135 which I've used before switching to KDE.
I don't care about this. Most of the time I change the mouse theme when I change my GTK theme so, I really don't care about the default.
And black or white, both are easily readable, so it's ok as long as you don't make ping cursor default.