SYNOPSIS
       showrgb [ database ]

DESCRIPTION
       The  showrgb  program reads an rgb color-name database from a text file
       and converts it back to source form, printing the  result  to  standard
       output.  The default database is the one that X was built with, and may
       be overridden on the command line.  Specify the database  name  without
       the .txt, .pag or .dir suffix.

FILES
       /usr/share/X11/rgb  default database.