If it doesn't say you can't, its allowed.
EDIT:
The Robot:
[R67]
Any decorations that involve broadcasting a signal to/from the Robot, such as remote cameras, must be approved by FIRST (via e-mail to
frcteams@usfirst.org) prior to the event and tested for communications interference at the venue. Such devices, if reviewed and approved, are excluded from Rule [R55].
I'm assuming the Axis camera everyone has will have been approved already.