diff -u b/core/modules/color/lib/Drupal/color/Tests/ColorTest.php b/core/modules/color/lib/Drupal/color/Tests/ColorTest.php
--- b/core/modules/color/lib/Drupal/color/Tests/ColorTest.php
+++ b/core/modules/color/lib/Drupal/color/Tests/ColorTest.php
@@ -36,8 +36,9 @@
   protected $themes;
 
   /**
-   * Associative array of hex color strings to test. Keys are the color string
-   * and values are a boolean set to TRUE for valid colors.
+   * Associative array of hex color strings to test.
+   *
+   * Keys are the color string and values are a Boolean set to TRUE for valid colors.
    *
    * @var array
    */