'usage|h' => sub { podexit() },
'help' => sub { podexit(-verbose => 2) },
) or exit 64; # EX_USAGE
+
$opt{width} ||= $ENV{COLUMNS} || 80;
-$opt{color} //= 1;
+$opt{color} //= -t *STDOUT; # enable on tty
if (defined $opt{follow}) {
$opt{follow} ||= 1;
=over
-=item --no-color
+=item -c, --[no-]color
-Disable colored output of values and bar markers.
+Force colored output of values and bar markers.
+Defaults on if output is a tty,
+disabled otherwise such as when piped or redirected.
=item -f, --follow[=<seconds>]