commit f4345f6f17fbb3c2ea67106d64d71815ddf10671
Author: Joel Pittet <joel@pittet.ca>
Date:   Sun May 26 16:54:20 2013 -0700

    remove drupal_render_children

diff --git a/core/modules/color/color.module b/core/modules/color/color.module
index 16320e1..5f7de1e 100644
--- a/core/modules/color/color.module
+++ b/core/modules/color/color.module
@@ -243,10 +243,7 @@ function color_scheme_form($complete_form, &$form_state, $theme) {
  *   - form: A render element representing the form.
  */
 function template_preprocess_color_scheme_form(&$variables) {
-  $form = $variables['form'];
-
-  // @todo Remove/refactor pending http://drupal.org/node/1920886.
-  $children = $variables['form'];
+  $form =& $variables['form'];
 
   $theme = $form['theme']['#value'];
   $info = $form['info']['#value'];
@@ -266,10 +263,7 @@ function template_preprocess_color_scheme_form(&$variables) {
   }
   $variables['colors'] = $colors;
 
-  // Remove elements from the 'children' render array.
-  // @todo Refactor when http://drupal.org/node/1920886 is resolved.
-  unset($children['palette'], $children['scheme']);
-  $variables['children'] = drupal_render_children($children);
+  unset($form['palette'], $form['scheme']);
 
   // Attempt to load preview HTML if the theme provides it.
   $preview_html_path = DRUPAL_ROOT . '/' . (isset($info['preview_html']) ? drupal_get_path('theme', $theme) . '/' . $info['preview_html'] : drupal_get_path('module', 'color') . '/preview.html');
diff --git a/core/modules/color/templates/color-scheme-form.html.twig b/core/modules/color/templates/color-scheme-form.html.twig
index 3462a89..74b3652 100644
--- a/core/modules/color/templates/color-scheme-form.html.twig
+++ b/core/modules/color/templates/color-scheme-form.html.twig
@@ -7,7 +7,7 @@
  * - scheme: A color scheme form element. For example: a select element with
  *   color theme presets, or a color picker widget.
  * - colors: Colors that can be changed by entering in a new hex value.
- * - children: Child elements of the form that still need to be printed.
+ * - form: Child elements of the form that still need to be printed.
  * - html_preview: A HTML preview of the theme's current color scheme.
  *
  * @see template_preprocess()
@@ -23,7 +23,7 @@
       {{ color }}
     {% endfor %}
   </div>
-  {{ children }}
+  {{ form }}
   <h2>{{ 'Preview'|t }}</h2>
   {{ html_preview }}
 </div>