xsetroot(1) on Linux
The text 9113ad3d592a, as Debian 12 (Bookworm), Debian 11 (Bullseye), Debian 10 (Buster) shipped it.
root window parameter setting utility for X
Flags it lists
-
-background -
-bg -
-bitmap -
-cursor_name -
-d -
-def -
-default -
-display -
-fg -
-foreground -
-gray -
-grey -
-help -
-name -
-reverse -
-rv -
-solid -
-version