diff -u b/core/modules/color/tests/src/Functional/ColorTranslationPreviewTest.php b/core/modules/color/tests/src/Functional/ColorTranslationPreviewTest.php
--- b/core/modules/color/tests/src/Functional/ColorTranslationPreviewTest.php
+++ b/core/modules/color/tests/src/Functional/ColorTranslationPreviewTest.php
@@ -20,21 +20,18 @@
   public static $modules = ['color', 'color_test', 'language', 'locale'];
 
   /**
-   * Profile to enable.
-   *
-   * @var string
-   */
-  protected $profile = 'standard';
-
-  /**
    * {@inheritdoc}
    */
   protected function setUp() {
     parent::setUp();
     // Add a default locale storage.
     $this->storage = $this->container->get('locale.storage');
+
     // Add French language.
     ConfigurableLanguage::createFromLangcode('fr')->save();
+
+    // Installing bartik theme.
+    \Drupal::service('theme_installer')->install(['bartik']);
   }
 
   /**
@@ -43,6 +40,7 @@
   public function testTranslationPreview() {
     $account = $this->drupalCreateUser(['administer languages', 'administer themes']);
     $this->drupalLogin($account);
+
     $source = $this->storage->createString([
       'source' => 'Example heading',
       'context' => '',
@@ -55,7 +53,8 @@
-    //Checking the string 'Example heading' is translating to French.
+
+    // Checking the string 'Example heading' is translating to French.
     $this->drupalGet('fr/admin/appearance/settings/bartik');
     $this->assertSession()->statusCodeEquals(200);
     $this->assertSession()->pageTextContains('Exemple de titre');
 
   }
-}
+}
\ No newline at end of file