Any way to add CSS for common path? I have a Drupal 7 with several basic pages with repeated paths, for example:

1) /red-car/ford-and-chevy
2) /red-car/nissan-sport
3) /red-car /renault-mazda
4) /blue-house/mexico
5) /blue-house/colombia
6) /blue-house/el-salvador


How can I add a file red-car.css for "/red-car/" and blue-house.css for
  "/blue-house/" from template.php?
You might want to do something like this in your template.php file.

function MYTHEME_preprocess_node($vars) {
  switch (arg(0)) {
    case 'red-car':
      drupal_add_css(drupal_get_path('theme', 'MYTHEME') . "/css/red-car.css");
      break;
    case 'blue-house':
      drupal_add_css(drupal_get_path('theme', 'MYTHEME') . "/css/blue-house.css");
      break;
  }
}