I actually wasn't aware of it either. I had been asking Stu about the possibility of an extender and he showed me the link to MarkM's original post. It was an Empeg newb back then so I completely missed it.

On the button lights, good question. Perhaps MarkM or Stu can answer. I'm guessing so. I just placed an order for 10 sets of pcb boards so we will find out in a couple of months.