Hello A.,
To follow to my remark (it is not yet implemented for Activity Diagram...), you can just currently use local color, as:
@startuml
start
:foo1;
floating note left #green: This is a note
:foo2;
note right #green
This note is on several
//lines// and can
contain <b>HTML</b>
====
* Calling the method ""foo()"" is prohibited
end note
:foo1;
floating note left #pink: This is a note
:foo2;
note right #pink
This note is on several
//lines// and can
contain <b>HTML</b>
====
* Calling the method ""foo()"" is prohibited
end note
stop
@enduml
Enjoy,
Regards,
Th.