About: http://webisa.webdatacommons.org/251742020

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	They are baked in as generic rgb (which, despite the name, is an actual, specific color space from Apple and is used as a default just like other systems use sRGB as a default).
http://www.w3.org/ns/prov#wasQuotedFrom	github.com