Secret Codes You Aren't Meant to Know

How many of these have you heard?

I would get in sh*t if I didn't know code Adam.

We have all the colour codes at work (a hopsital).
Grey for aggression is the most common one, particularly for emergency.
Blue for resp/cardiac arrest. Not so common that we have MET calls now.
Red is smoke/fire.
Yellow is internal issues (water leak/electrical outage).
Orange is evacuation.
There are Black (armed threat) and Purple (bomb threat), but they are never announced over the PA, just sent through the pager system and the police are called.
Code brown in just nurse speak for sh.t absolutely everywhere.