SIDENOTE: is it still true that Apple doesn't document the menulet interface? (i.e., the Menu Extras on the righthand side of the menubar). I thought that all non-Apple things in that region were deemed "hacks" by definition.
There for awhile non apple menulets needed to be black and white only, only apple's could be color. And I think even now all non apple menulets have to be left of apple's. (and you can't move them as you can with apple's)