Digging around my Finder and discovering this amazing background for Time Machine make me very proud of myself.

I don't have any devices available to access my Time Machine. However, I can tell from Mac OS X Leopard Guided Tour how does the Time Machine background look like.

Now let's compare to Desktop Picture provided inside our Leopard named vortex. Vortex is available in PNG Format and is located at Macintosh HD ▸ System ▸ Library ▸ CoreServices ▸ Finder ▸ Contents ▸ Resources

Inside that same folder, there are also several files named NormalBlueStar, NormalRedStar, NormalWhiteStar and NormalYellowStar in a TIFF Format. I believe those are the things flying towards us when we used our Time Machine.