gnome-color-chooser(1) on Linux
The text dace6e74c8e4, as Debian 9 (Stretch), Debian 8 (Jessie), Debian 7 (Wheezy), Debian 6.0 (Squeeze) shipped it. The page shows this text now.
GTK+/GNOME desktop appearance customization tool
Flags it lists
-
--help -
--validator-only -
--version -
-?