Invalid font color="grey", should be "gray"

in drupalforfirebug.module,
line 323

      $color = '<font color="grey">'.$style;

should be

      $color = '<font color="gray">'.$style;

and on line 337

      $output .= "<div>$spacing <font color=grey> [$key] => stdClass ($colorend </div>";

should be

      $output .= "<div>$spacing <font color=gray> [$key] => stdClass ($colorend </div>";