Hello PlantUML,
From last release (v1.2021.1), with style enhancement on Deployment diagram, We have got some questions:
- Is style management local or global?
Local with persistence or only global?
Here are some examples "Mind-map vs Deployment":
Diagram | Mind-map | Deployment |
Code | @startmindmap
* a
** b\na b c
<style>
node {
FontColor green
HorizontalAlignment right
LineColor blue
}
</style>
** c\na b c
<style>
node {
FontColor red
LineColor red
}
</style>
** d\na b c
@endmindmap | @startuml
node "a"
node "b\na b c"
<style>
node {
FontColor green
HorizontalAlignment right
LineColor blue
}
</style>
node "c\na b c"
<style>
node {
FontColor red
LineColor red
}
</style>
node "d\na b c"
@enduml |
Output |  [See on PlantUML online server] | [See...] |
Observation | On Mind-map, style seems to be local with persistence. (That's good ) | And on Deployment, style is suddenly global! The last style overwrites all the others. (And that is the question...) |
In fact, we got used to the mind-map style behaviour! 
Thanks for your support,
Regards,
Th.