specification { element actor { style { shape person color indigo } } element system { style { color primary } } element externalSystem { style { color gray } } element app { style { shape browser color green } } element service { style { shape component color primary } } element adapter { style { shape component color amber } } element runtime { style { shape component color secondary } } element store { style { shape storage color muted } } element entity { style { shape storage color muted } } relationship sync { line solid } relationship async { line dotted } relationship reads { line dashed color gray } relationship writes { line solid color gray } }