diff --git a/core/modules/color/tests/src/Functional/ColorTest.php b/core/modules/color/tests/src/Functional/ColorTest.php
index 7ea8ace..bb7d6fa 100644
--- a/core/modules/color/tests/src/Functional/ColorTest.php
+++ b/core/modules/color/tests/src/Functional/ColorTest.php
@@ -118,7 +118,7 @@ function _testColor($theme, $test_values) {
     foreach ($stylesheets as $stylesheet) {
       $this->assertSession()->responseMatches('|' . file_url_transform_relative(file_create_url($stylesheet)) . '|');
       $stylesheet_content = join("\n", file($stylesheet));
-      $this->assertTrue(strpos($stylesheet_content, 'color: #123456') !== FALSE, 'Make sure the color we changed is in the color stylesheet. (' . $theme . ')');
+      $this->assertTrue(strpos($stylesheet_content, 'color: #123456') !== FALSE);
     }
 
     $this->drupalGet($settings_path);
@@ -130,7 +130,7 @@ function _testColor($theme, $test_values) {
     $stylesheets = $this->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 . ')');
+      $this->assertTrue(strpos($stylesheet_content, 'color: ' . $test_values['scheme_color']) !== FALSE);
     }
 
     // Test with aggregated CSS turned on.
@@ -143,7 +143,7 @@ function _testColor($theme, $test_values) {
     foreach ($stylesheets as $uri) {
       $stylesheet_content .= join("\n", file(drupal_realpath($uri)));
     }
-    $this->assertTrue(strpos($stylesheet_content, 'public://') === FALSE, 'Make sure the color paths have been translated to local paths. (' . $theme . ')');
+    $this->assertTrue(strpos($stylesheet_content, 'public://') === FALSE);
     $config->set('css.preprocess', 0);
     $config->save();
   }
@@ -202,8 +202,8 @@ function testOverrideAndResetScheme() {
     $this->drupalPlaceBlock('system_branding_block', ['region' => 'header']);
 
     $this->drupalGet('');
-    $this->assertNoRaw('files/color/bartik-', 'Make sure the color logo is not being used.');
-    $this->assertRaw('bartik/logo.svg', 'Make sure the original bartik logo exists.');
+    $this->assertNoRaw('files/color/bartik-');
+    $this->assertRaw('bartik/logo.svg');
 
     // Log in and set the color scheme to 'slate'.
     $this->drupalLogin($this->bigUser);
@@ -213,8 +213,8 @@ function testOverrideAndResetScheme() {
     // Visit the homepage and ensure color changes.
     $this->drupalLogout();
     $this->drupalGet('');
-    $this->assertRaw('files/color/bartik-', 'Make sure the color logo is being used.');
-    $this->assertNoRaw('bartik/logo.svg', 'Make sure the original bartik logo does not exist.');
+    $this->assertRaw('files/color/bartik-');
+    $this->assertNoRaw('bartik/logo.svg');
 
     // Log in and set the color scheme back to default (delete config).
     $this->drupalLogin($this->bigUser);
@@ -224,8 +224,8 @@ function testOverrideAndResetScheme() {
     // Log out and ensure there is no color and we have the original logo.
     $this->drupalLogout();
     $this->drupalGet('');
-    $this->assertNoRaw('files/color/bartik-', 'Make sure the color logo is not being used.');
-    $this->assertRaw('bartik/logo.svg', 'Make sure the original bartik logo exists.');
+    $this->assertNoRaw('files/color/bartik-');
+    $this->assertRaw('bartik/logo.svg');
   }
 
 }