edp-doc/likec4/spec.c4

specification {
    element actor {
        style {
            shape person
            color green
        }
    }
    element system
    element component
    element container {
        style {
            opacity 20%
        }
    }
    element internalComponent {
        style {
            color muted
            opacity 15%
        }
    }

    deploymentNode node
    deploymentNode environment {
        style {
            color gray
        }
    }
}