In our house we don't go by the Homeland Security's color system. We think it is too amateurish. We use the military's DefCon (Defense Condition) system. We currently have the DefCon 3 protocols in place.

We were briefly at DefCon 1 last week when I left the toilet seat up.

DefCon 1	Active declared war
DefCon 2	Open hostilities
DefCon 3	Immanent threat of open hostilities
DefCon 4	Low threat of hostilities
DefCon 5	All clear