The voice of reason BEETOO-1 above knows so much yet fails to share his wisdom with us.
The Off lights are controlled by their respective GCUs and indicate that the GCB is open. I've seen the same phenomenon on the 777 but don't have much time on the type and don't see them very often so have never found out the definitive answer to your question.
I'll ask around and see if anyone can remember and get back to you.
