Unable to change arrow color for timing diagram

Question

Color option for arrows is not working for timing diagram

Changing this

WU ->  WB : URL

to 

WU -[#red]>  WB : URL

Doesn't work.

Can you please fix all options of arrows.

Comments

Doesn't work." is a  bad description, always supply the error message.

Also always supply the plantuml version used as well as a small minimal (working) example showing the problem

Answer 1

With version 1.2018.12 (from the plantuml web server: http://www.plantuml.com/plantuml) I get:

@startuml
(*) -[#blue]-> [URL1] "First Activity"
"First Activity" -[#red]> [URL2] "Second Activity"
"Second Activity" -[#green]> [URL3] (*)
@enduml

http://www.plantuml.com/plantuml/png/SoWkIImgAStDuTBGqbJGZLPEoYbDZTMrKr1ooomgBb5mJ2x9BCiigLJYGXS0AIvAJOa5AWrEJSxFIq5MYn11A4ulIatD0oe7MiJba9gN0hGK0000

So I think your version it old (just check with starting plantuml with -version) or that you use the wrong syntax.