[Note: This is for Pebbles running firmware 2.0 and up only!]
Retro-chic! Trying to evoke that classic Nixie tube look!
Like having this strapped on your wrist:
http://en.wikipedia.org/wiki/File:Nixie_clock.jpg
Here's a real Nixie watch (probably cooler).
http://www.youtube.com/watch?v=u0xamRXGe1E
1.2 - Flicker effect added
1.1 - Numbers will fade with dithering