@startuml skinparam useBetaStyle true ' style enclosure declaration <style> ' scope to sequenceDiagram elements sequenceDiagram { ' scope to actor element types actor { FontColor Blue } ' define a new style, using CSS class syntax .myStyle { FontColor Red } ' define a new style, using CSS class syntax .number1 { BackgroundColor #GoldenRod RoundCorner 20 ShowStereotype true } ' define a new style, using CSS class syntax .number2 { BackgroundColor #Green RoundCorner 20 } } } </style> ' printed in blue actor Bob ' this will now be printed in Red actor Sally <<myStyle>> participant Test <<Too>> participant Test1 <<number1>> participant Test2 <<number2>> @enduml Submit amiga aws-orange black-knight bluegray blueprint cerulean-outline cerulean crt-amber crt-green cyborg-outline cyborg hacker lightgray mars materia-outline materia metal mimeograph minty plain reddress-darkblue reddress-darkgreen reddress-darkorange reddress-darkred reddress-lightblue reddress-lightgreen reddress-lightorange reddress-lightred sandstone silver sketchy-outline sketchy spacelab spacelab-white superhero-outline superhero toy united vibrant       🎉 Discover the future PlantUML Web Editor! 🚀  PNG  SVG  ASCII Art