Little iPhone UI quirk

In iPhone vsn. 3, Apple have added a Spotlight feature. It's very nice, really; it's particularly handy for searching for music. You get to it by sliding to the left. The UI involved in doing so, however, is a little weird.

Here's a normal iPhone screen.

Sliding to the left, about two thirds gone. Note that the icons are fading out. And also that the number indicators on the icons, which show new stuff, are fading out, independently from the icons, showing both the background and the icon underneath the number.

Going the other way, no icon fading!

Minor, but I thought it was interesting, especially the numbers being treated as separate entities.

Perhaps I'm just easily amused.