Change Properties of Nodes

Question

I am trying to change the shape of invidual nodes in use case diagram.  Is there a way to change the shape of the node from the elliptical to a diamond or a rectangle?

Also, I know you can change the colors of nodes by doing this:

(example) #red

But are you able to change the border color of the individual nodes?  or is there some kind of skinparam where you can specify different skinparams that are linked to a tag you can attach to certain nodes? Something like this (but this doesn't work):

(example) usecaseBorderColor #red

Thanks!

Answer 1

It's not widely documented, but you can have:

@startuml
rectangle foo #red;line:blue
usecase dummy #line:FF7777
@enduml

Is this what you are looking for ?