Just a sample.
War Plan Green was for war with Mexico or Mexican Domestic Intervention.
War Plan Orange was for war with the Japanese Empire.
War Plan Red/Orange was for a war with the Japanese-British Alliance.
War Plan Gold was for war with France
War Plan Silver was for war with Italy.
War Plan Yellow or War Plan Violet was for war with China or China Domestic Intervention.
War Plan Gray was for war in the Caribbean.
War Plan Indigo was for Iceland Intervention.
War Plan Emerald was for Ireland Intervention in conjunction with War Plan Red.
War Plan Gray was for Azores Intervention.
War Plan Tan was for Cuba Intervention.
War Plan Black was for War with Germany
War Plan White was known as the "U.S. Domestic Contingency".
The details of this plan revealed purchase contracts for BB guns, underwear, and really scary faces.
"War Plan Green was for war with Mexico or Mexican Domestic Intervention."
I think we should dust that one off.