This syntax is deprecated, you must add <<#navy>> at the end of the line, after the ';' transparent color Backgroundcolor? skinparam backgroundColor silver skinparam cloudBackgroundColor transparent skinparam backgroundColor transparent skinparam backgroundColor transparent skinparam databaseBackgroundColor yellow] skinparam nodeBackgroundColor transparent :BackgroundColor is silver skinparam cloudBackgroundColor transparent skinparam cloudBackgroundColor transparent Group is transparent skinparam databaseBackgroundColor yellow] skinparam databaseBackgroundColor yellow] :Group node should not be transparent that is OK (as in v1.2020.10 , where Group node is white) :Expect if explicilty declare transparent (on v1.2020.11 beware of pale line on the bottom of node) (here we declare node transparent) (on v1.2020.11 beware of pale line on the bottom of node)