Theme suggestion for node type.

gistfile1.txt

function newtheme_preprocess_page(&$vars, $hook) {
  if (isset($vars['node'])) {
  // If the node type is "blog" the template suggestion will be "page--blog.tpl.php".
   $vars['theme_hook_suggestions'][] = 'page__'. str_replace('_', '--', $vars['node']->type);
  }
}

// Add a single suggestion for nodes that have the "Promoted to front page" box checked.
function newtheme_preprocess_node(&$variables) {
  if ($variables['promote']) {
    // looks for node--promoted.tpl.php in your theme directory
    $variables['theme_hook_suggestion'] = 'node__promoted';
  }
}