 an X11 color file.  In many cases you will want to
`<font color="#82140F"><code>read colornames from RGB "/usr/lib/X11/rgb.txt"</code></font>'.  Full filenames
must be used; the '~' syntax is not permitted.  Once you have read in a
colorname table, the named colors may be used as builtin colors
(see <a href="Set.html#SetColor">Set Color</a>).  To view the colors available on your particular
system, use the Unix command `<font color="#82140F"><code>xcolors</code></font>' or `<font color="#82140F"><code>exco