He's using a beta Brawlbox I uploaded to a new Google Code SVN for Dantarion to look at/work on (although he hasn't done anything yet

). The border/color/etc of hitboxes are all based on their special/normal flags. Change the flags and the hitbox will change as well. inb4memorization
Moveset rebuilder is coming along very well still, but I can't test anything until Saturday.
Also, I told you that request was done.
Bone Collisions: The hurtbox attached to the bone and the actual bone node changes color.
Body Collisions: All hurtbox bubbles change color.
I also implemented this for value parameters that have a text representation (enum):
It's fully customizable for any value parameter with a text file. Body and bone collisions already use it.
The beta Brawlbox that I uploaded to the SVN doesn't support that or your request yet because you requested it after I uploaded it.
And yes, I will be updating the SVN constantly
after v0.67 is released, so you can always get a copy of the source and compile it yourself if you really want a bugfix or to test it before an official stable release.