The gtk2-engines package contains shared objects and configuration files that implement a number of GTK+ theme engines. Theme engines provide different looks for GTK+, some of which resemble other toolkits or operating systems.
acquired package info from repodata DB: repodata/1878cc60a19e65efc93d1a539275c5a6799b0acbd7796ee105712c44cae47ab4-primary.sqlite.bz2