xstdcmap(1x) on Linux
The text 571e0ffc2d4e, as Debian 3.1 (Sarge) shipped it. The page shows this text now.
X standard colormap utility
Flags it lists
-
-all -
-best -
-blue -
-default -
-delete -
-display -
-gray -
-green -
-help -
-red -
-verbose