This is a ring with the Hack A Day logo, specifically made for the "Trinket" contest. http://hackaday.com/2013/10/21/pander-to-us-and-win-a-trinket/
Each piece of the two-colored ring was printed out seperately. This was not printed on a multi-colored 3d printer.
There are 2 files, one of the ring itself, one of a disk that pops in the back of the ring to be the skull and cross bones.
I printed this with the flat side down and was happy with how it came out. When both pieces are printed, pop the disk in the back of the ring.
The eyes and nose printed but I lost one of the eyes (they are very small) so I didn't use them. What I did was cut a little section of my 1.75mm filament with an exacto knife, then cut that piece in half. You can see each eye is half a circle. The nose was cut out of the filament too. Then I used some super glue to glue them on.
-Print both peices.
-Glue the disk in the back of the ring.
-Glue the eyes and nose in place.