The "basic" requirements to just "run" it is to have an eye node,mount0 (right hand), and mount6 (head)
All other nodes can be named by anything. If you want them to follow the colorshift of the avatars, go to:
base/data/shapes/player/
Then look at the names of the text files. They are the names of the joints. The directory also includes all animations possible with the Blockhead.