dark.plantuml

@startuml iframes

!define lightGrey #666666
!define darkGrey #444444
!define yellow #f8f884
!define green #baed91
!define blue #b2cefe
!define red #ff9aa2
!define orange #f8b88b
!define violet #f2a2e8

left to right direction

skinparam Handwritten true
skinparam backgroundColor lightGrey
skinparam RectangleBackgroundColor darkGrey

rectangle "<font color=#FFFFFF>Twitter</font>" darkGrey {
    rectangle "Header" yellow {

    }
    rectangle "Profile" green {

    }
    rectangle "Create Tweet" blue {

    }
    rectangle "Schedule Tweet" violet {

    }
    rectangle "Settings" red {

    }
    rectangle "Footer" orange {

    }
}

@enduml