Arduino style pictures?

hey, i was wondering about where to get these arcane "Style" pictures...

http://www.arduino.cc/new_home/assets/illu-arduino-UNO.png

any idea?

They are probably a byproduct of the CAD software used to design the board layout.

Those are from Fritzing.
The boards are designed in Eagle.
Those outputs look like this (this one had monochrome selected)