diff --git a/core/modules/color/lib/Drupal/color/Tests/ColorConfigSchemaTest.php b/core/modules/color/lib/Drupal/color/Tests/ColorConfigSchemaTest.php
index d34f06e..ebaa303 100644
--- a/core/modules/color/lib/Drupal/color/Tests/ColorConfigSchemaTest.php
+++ b/core/modules/color/lib/Drupal/color/Tests/ColorConfigSchemaTest.php
@@ -26,7 +26,7 @@ class ColorConfigSchemaTest extends ConfigSchemaTestBase {
    *
    * @var \Drupal\user\UserInterface
    */
-  protected $big_user;
+  protected $adminUser;
 
   public static function getInfo() {
     return array(
@@ -44,8 +44,8 @@ function setUp() {
     \Drupal::service('theme_handler')->enable(array('bartik'));
 
     // Create user.
-    $this->big_user = $this->drupalCreateUser(array('administer themes'));
-    $this->drupalLogin($this->big_user);
+    $this->adminUser = $this->drupalCreateUser(array('administer themes'));
+    $this->drupalLogin($this->adminUser);
   }
 
   /**
diff --git a/core/modules/color/lib/Drupal/color/Tests/ColorTest.php b/core/modules/color/lib/Drupal/color/Tests/ColorTest.php
index a3e1c08..970097d 100644
--- a/core/modules/color/lib/Drupal/color/Tests/ColorTest.php
+++ b/core/modules/color/lib/Drupal/color/Tests/ColorTest.php
@@ -136,7 +136,7 @@ function _testColor($theme, $test_values) {
     $this->drupalPostForm($settings_path, $edit, t('Save configuration'));
 
     $this->drupalGet('<front>');
-    $stylesheets = \Drupal::config('color.theme' . $theme)->get('stylesheets');
+    $stylesheets = \Drupal::config('color.theme.' . $theme)->get('stylesheets');
     foreach ($stylesheets as $stylesheet) {
       $stylesheet_content = join("\n", file($stylesheet));
       $this->assertTrue(strpos($stylesheet_content, 'color: ' . $test_values['scheme_color']) !== FALSE, 'Make sure the color we changed is in the color stylesheet. (' . $theme . ')');
diff --git a/core/modules/config/lib/Drupal/config/Tests/ConfigSchemaTestBase.php b/core/modules/config/lib/Drupal/config/Tests/ConfigSchemaTestBase.php
index 13e9c49..61eee7e 100644
--- a/core/modules/config/lib/Drupal/config/Tests/ConfigSchemaTestBase.php
+++ b/core/modules/config/lib/Drupal/config/Tests/ConfigSchemaTestBase.php
@@ -19,7 +19,7 @@
 use Drupal\simpletest\WebTestBase;
 
 /**
- * Tests default configuration availability and type with configuration schema.
+ * Provides a base class to help test configuration schema.
  */
 abstract class ConfigSchemaTestBase extends WebTestBase {
 
@@ -54,7 +54,14 @@ public static function getInfo() {
   }
 
   /**
-   * Tests default configuration data type.
+   * Asserts the TypedConfigManager has a valid schema for the configuration.
+   *
+   * @param \Drupal\Core\Config\TypedConfigManagerInterface $typed_config
+   *   The TypedConfigManager.
+   * @param string $config_name
+   *   The configuration name.
+   * @param array $config_data
+   *   The configuration data.
    */
   public function assertConfigSchema(TypedConfigManagerInterface $typed_config, $config_name, $config_data) {
     $this->configName = $config_name;