(--------)
In PlantUML, sprites are monochrome and can have either 4, 8 or 16 gray level.
You can have colors like this:
@startuml!define AWSPUML https://raw.githubusercontent.com/milo-minderbinder/AWS-PlantUML/release/18-2-22/dist
!includeurl AWSPUML/common.puml!includeurl AWSPUML/General/AWScloud/AWScloud.puml
cloud "AWS" as aws <<$AWScloud>> {}AWSCLOUD("awsColor", "bbb", "cloud", red, stereotype)AWSCLOUD("awsColor2")@enduml
http://www.plantuml.com/plantuml/uml/RKrDImCn4BtdLwJ1WuLkWtiIAQLImKl5WXJFoMQqWSbacKme8lvtqvLwwcNcpRoFjodYM6f2DGlm4Gdqu_lR_l2oqqUHiJnOo-wq_8nohBuMu26J0CbooCccYBbBaGAmdwPjtcwFZgG5M0O4Ly3UtNTzr_Ssn29ApI8DM0DKnakLRM4fqtAi2Q_opq303i_n0-OQ_i6VHKrOc_OrsXNjJaMlLZSNqNgjlzMFQkTsztfukZMDtsRCR1RQUE_FQn8sm10MkWWmPFaQONx5rPkvsW25rlmB