Gradient on alt boxes

Question

When you specify a gradient on an else after an alt, like on:

http://www.plantuml.com/plantuml/uml/SoWkIImgAStDuL80WiIS4WLbdypqZ1AddD9K1SyqXUBytDIIZCoyT0MFn8A2rBnYBWKeS5JGrRLJS0BpKtEAKw4QWtCIIrBTYn8hzS5614Fr0mqeBYbAp4jFLSZ0Qf0pka41cNdPoDhBKpEBKd1eTe5epalXSW0IGDy00000



It seems to me that the box is ignoring the gradient and using the previous color.

On the other hand, there is support for gradients s at all?

Comments

Misread the question, but leave it as comment.

The syntax is all a bit strange to me, I could not find the relevant documentation and skin parameter but by chance I stumbled over the syntax:

@startuml
alt#green #LightBlue something Happens
        A --> B
    else #LightSlateGray Somethinng strange happens
        A --> C
    else #LightPink Somethinng weird happens
        A --> D
    end
@enduml

Giving:

http://www.plantuml.com/plantuml/umla/TS-n2i903CRnlKyHwDnNa5e57Ho4Fa6W7tU7rrYI5F7jFUmDKZ138CFl3-dDMNsTSyFPsw20K7jB8VgGLv0zPtXC4kZAom8nQgZEaRhkGCFtHZPKDcPsN9JVD5PRiBco153S8hl6QT-u9tdyyXUIJd_mUSCoDNrPvP4F

I don't think the "/Blue" was intended either

---

So, no support for gradients in alt boxes but yes for normal boxes like :

http://www.plantuml.com/plantuml/umla/TOz12eCm44NtESK7rz8R5BM5Tj55mHD476Be62KPiTw-GysY2FsGCCFm7lmgYOsoZ6owwOswqQ_OY7bQJnqlPA2nB8MBH075mxj16ZqWJIF9u8F3tSupXGI3d1fbUKRptOaJPQnbAtIBTaERMOMJH1iSOTWb1yVbw7ZwyFh5L_An_mDVTpZqHX-qdgbqqAeV

The /Blue is to emulate the background color syntax for gradients that is there for normal boxes. I couldn't find either the documentation on how to change the color of the alt box. 

Thanks for it (a skinparam for that would be great).