Allow multiple color palettes for Archimate

[The-Lum]

Hello plantuml-stdlib/Archimate-PlantUML team,

Here is a wanted feature.

It seems there is a new alternative color palette for Archimate, then:

• Could you allow old (current) classic color palette and also the new alternative color palette?
• Could you add the new palette, configurable?

Color Name	Classic palette (implemented on current plantuml)	Alternative palette
STRATEGY	#F8E7C0	#E5A82E
BUSINESS	#FFFFCC	#F8DA62
APPLICATION	#C2F0FF	#92B8C4
TECHNOLOGY	#C9FFC9	#9FB394
MOTIVATION	#EFEFFF	#B3A8B8
PHYSICAL	#97FF97	Not yet defined?
LOCATION	Not defined But should be #EFD1E4	#BABABA
IMPLEMENTATION	#FFE0E0	#E9A7A1

• How to make this configurable? to switch from one configuration to another...

Ref.:

• https://www.opengroup.org/archimate-forum
• https://www.opengroup.org/sites/default/files/alternative-color-set.pdf
• https://www.archimatetool.com/resources/

Related issue/request/PR or code:

• plantuml/plantuml#312
• plantuml/klimt/color/HColorSet.java

[FYI @arnaudroques, and @plantuml core team] Regards, Th.