diff -u b/core/modules/color/src/Plugin/migrate/source/d7/Color.php b/core/modules/color/src/Plugin/migrate/source/d7/Color.php
--- b/core/modules/color/src/Plugin/migrate/source/d7/Color.php
+++ b/core/modules/color/src/Plugin/migrate/source/d7/Color.php
@@ -33,7 +33,7 @@
     $query = $this->select('variable', 'v')
         ->fields('v', array('name', 'value'))
         ->condition('name', 'color_%', 'LIKE')
-        ->condition('name', 'color_%screenshot', 'NOT LIKE');
+        ->condition('name', 'color_%_screenshot', 'NOT LIKE');
     return $query;
   }
 
diff -u b/core/modules/color/src/Tests/Migrate/d7/MigrateColorTest.php b/core/modules/color/src/Tests/Migrate/d7/MigrateColorTest.php
--- b/core/modules/color/src/Tests/Migrate/d7/MigrateColorTest.php
+++ b/core/modules/color/src/Tests/Migrate/d7/MigrateColorTest.php
@@ -70,7 +70,6 @@
     $this->assertIdentical($files, $config->get('files'));
     $this->assertIdentical($logo, $config->get('logo'));
     $this->assertIdentical($palette, $config->get('palette'));
-    $this->assertIdentical(NULL, $config->get('screenshot'));
     $this->assertIdentical($stylesheets, $config->get('stylesheets'));
 
     // Test Bartik migration.
diff -u b/core/modules/color/tests/src/Unit/Plugin/migrate/source/d7/ColorTest.php b/core/modules/color/tests/src/Unit/Plugin/migrate/source/d7/ColorTest.php
--- b/core/modules/color/tests/src/Unit/Plugin/migrate/source/d7/ColorTest.php
+++ b/core/modules/color/tests/src/Unit/Plugin/migrate/source/d7/ColorTest.php
@@ -71,7 +71,6 @@
         ]
       ]
     ];
-    var_dump($this->databaseContents['variable']);
     foreach ($this->databaseContents['variable'] as $key => $expected) {
       $this->databaseContents['variable'][$key]['value'] = serialize($expected['value']);
     }