I'd like a skinparam to set the background color of the activity beta diamond node.It currently is the same as the skinparam activityBackgroundColor, but we normally use Yellow for the conditions, and another color for the actions.
Ensure no space with ":" and "if"
@startumlstart#green:if (Turn On The Game?) then (yes) :Having Fun;else (no) #red:Not Having Fun; note right:sad note is sadendifstop@enduml
reference code from see https://forum.plantuml.net/4710/please-provide-way-to-inline-set-the-background-color-notes?show=4710#q4710