Please find attached my version of a quick reference card. The information is, due to the limitation of the sheet not very much. I tried to get the most important infos on it.
It is a LaTeX-file based on the pgf/tikz package. I documented the file in a way that even a LaTeX-novice should be able to modify the colour code to his needs. I created this card with the pcb-board of the Bus Pirate V3 in mind. It will fit exactly under the pcb and thus people can stick it there by double sided tape or whatever.
Anyhow, any changes and suggestions are welcome. I published it under GNU Free Documentation License, thus you can do whatever you like with it.
Thanks for the tip!