Unit Tests

- Correcting more unit tests that made color assumptions that are no
  longer valid.

src/tests/cal.t

@@ -42,6 +42,7 @@ if (open my $fh, '>', 'cal.rc')
             "color.calendar.due=black on green\n",
             "color.calendar.weeknumber=black on white\n",
             "color.calendar.overdue=black on red\n",
+            "color.calendar.weekend=white on bright black\n",
             "confirmation=no\n";
   close $fh;
   ok (-r 'cal.rc', 'Created cal.rc');