Install Notes: At this time they don't seem to reside in a specific folder I'll update this when 1.1 is released and pending it goes into another directory.
Additional Notes: When making colour alterations refer to the screenshot (below) it's pretty self explanatory and a matter of click layer pick colour and save. At this time obviously these are no needed until xenforo 1.1 is released.
Related Releases: The Squared node icons can be found in this thread
Note: I only have access to this area for a day so I won't be providing support. The process is very easy you will be fine making the necessary alterations when the time comes.